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The arguments supplied to functions in MeshFunctions and RegionFunction are x, y. Functions in ColorFunction are by default supplied with scaled versions of these arguments. ScalingFunctions->" scale " scales the coordinate; ScalingFunctions {" scalex ", " scaley "} scales both the and coordinates.
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Now I want to convert it to a symbolic function, but seems MATLAB has trouble assuming p(1) and p(2) as symbol. So
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Matlab learning 7-linear regression equation, multivariate, cftool, interpolation drawing 1, multivariate function model rstool 2. Other polynomial classes fit cftool Fit mode: Result judgment 3, matalb interpolation and drawing 3.1.
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You cannot define that as a function in MATLAB. MATLAB functions need to have a defined value for the case where none of the conditions hold. If you were absolutely sure that one of the conditions will hold you would rewrite the Maple function without the final condition, as
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Sketching piecewise functions in MATLAB. Applied computing. Education. Computer-assisted instruction. Mathematics of computing. Mathematical software. Comments
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I wrote some simple Matlab code which solves a stochastic optimal growth model via Euler function (Coleman policy) iteration, and then again with value function iteration. You can find here. I uploaded it because I also noticed that basically the only other source of code for this stuff is QuantEcon.
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Nov 26, 2019 · Proposed by Donoho (1997), Dyadic CART is a nonparametric regression method which computes a globally optimal dyadic decision tree and fits piecewise constant functions. In this article we define and study Dyadic CART and a closely related estimator, namely Optimal Regression Tree (ORT), in the context of estimating piecewise smooth functions in general dimensions. More precisely, these ...
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MATLAB provides functions and GUIs to perform a variety of common data-analysis tasks, such as plotting data, computing descriptive statistics, and performing linear correlation analysis, data fitting, and Fourier analysis.
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We describe three possible piecewise multilinear interpolation schemes in detail and conduct a numerical comparison. Furthermore, we summarize the features of our efficient and easy-to-use sparse grid interpolation software package spinterp for Matlab, which is available for free.
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Apr 04, 2015 · x_p=A [:,1]; syms x; if (x<x_p (1)) f (x)=y_p (1)+ (x-x_p (1))* ( (y_p (2)-y_p (1))/ (x_p (2)-x_p (1))); elseif (x>x_p (length)) f (x)=y_p (length (x_p))+ (x-x_p (length (x_p)))* ( (y_p (length (x_p))-y_p (length (x_p)))/ (x_p (length (x_p))-x_p (length (x_p)-1))); else.
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Hi, and welcome to the class on multivariable regression, as part of our course here at Data Science Specialization. In this lecture, we're gonna talk about instances where we have lots of potential predictors for an outcome, rather than just a single predictor in linear regression.

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In this section we define the Fourier Series, i.e. representing a function with a series in the form Sum( A_n cos(n pi x / L) ) from n=0 to n=infinity + Sum( B_n sin(n pi x / L) ) from n=1 to n=infinity. We will also work several examples finding the Fourier Series for a function. This figure illustrates graphically what the numbers above show. The function crosses zero at approximately \(x = 1.5\). To get a more precise value, we must actually solve the function numerically. We use the function func:scipy.optimize.fsolve to do that. More precisely, we want to solve the equation \(f(x) = \cos(x) = 0\).


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when graphing piecewise linear functions, when/how do I know when the line increases or decreases? Ex: f(x) = -5, x>= 1 (this I understand is a horizontal line a y= -5; beginning, but not = 1) hello dear sixww... thanks for your answer , but i think i couldn't express clearly. i want define a piecewise function like as picture below that t is variable and we have f(t)= piecewise function and i want to plot it and do fourier illustration of this function and use fft function on it ant plot them.

  1. Multivariate Splines for Data Fitting and PDE’s 25 §0. Introduction Multivariate spline functions are piecewise polynomial functions which have certain smoothness over given polygonal domains. They are very flexible for approximating known or unknown functions or any given data sets. For example, finite elements are typical spline ...
  2. 6 ans = 1 A couple of remarks about the above examples: MATLAB knows the number , which is called pi. Computations in MATLAB are done in floating point arithmetic by default. The Matlab function expm(A) computes the matrix exponential eA. In contrast, exp(A) computes the elementwise exponential of the matrix A, which is usually not what you want. Time-invariant autonomous linear dynamical system Suppose ˙x = Ax, with A ∈ Rn×n (and constant). To compute x(t) = etA, we can use the code x_t = expm(t*A)*x_0; A piecewise function is a function made up of different parts. More specifically, it’s a function defined over two or more intervals rather than with one simple equation over the domain. It may or may not be a continuous function. Piecewise Continuous Function. A piecewise continuous function is continuous except for a certain number of points. In other words, the function is made up of a finite number of continuous pieces.
  3. MATLAB is a popular programming language for its simplicity and broad range of tools for topics like signal processing, statistics, di erential equations, and of course, matrices. Users can easily add their own m- le functions for speci c applications, further extending MATLAB's usefulness. Graph the piecewise function: Gimme a Hint. Show Answer. Example 4. Graph this piecewise function: Gimme a Hint = - Show Answer. Example 5. Graph this piecewise ...
  4. Then plot the B-spline with knot sequence t, as well as its polynomial pieces, by using the bspline function. bspline(t) This B-spline consists of 4 polynomial pieces: the red, green, purple, and black curves in the plot, each of degree 3. Functions from numerical analysis and linear algebra, numerical optimization, differential equations, plus some special functions. Uses Matlab function names where appropriate to simplify porting.
  5. Multi-variable continuity piecewise problem. Ask Question Asked 7 years, 3 months ago. Active 6 years, ... Continuity of piecewise function of multiple variables. 2. Convolving two piecewise functions. Learn more about convolution, piecewise function MATLAB, Signal Processing Toolbox, Symbolic Math Toolbox
  6. Multivariate Piecewise Polynomials A pp in Curve Fitting Toolbox can also be multivariate, namely, a tensor product of univariate pp functions. The ppform of such a multivariate pp is only slightly more complicated, with breaks now a cell array containing the break sequence for each variable, and coefs now a multidimensional array. Writing a Piecewise Function Write equations for the piecewise function whose graph is shown. SOLUTION To the left of x = 0, the graph is part of the line passing through (º2, 0) and (0, 2). An equation of this line is given by: y = x + 2 To the right of and including x = 0, the graph is part of the line passing through (0, 0) and (2, 2). Piecewise [ conds] automatically evaluates to Piecewise [ conds, 0]. Piecewise can be used in such functions as Integrate, Minimize, Reduce, DSolve, and Simplify, as well as their numeric analogs. Piecewise [ { { v 1, c 1 }, { v 2, c 2 }, … }] can be input in the form . v 1.
  7. Here let µ = .02, σ = .18 and t = .25, so p is a function on the variable x only. I created a function file pfun.m for this function, having µ, σ, t and x as input.
  8. Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation 181-184 Dynamic partial reconfiguration FPGA Filterbank hardware implementation 2010 We introduce a novel dynamically reconfigurable 2D filterbank that is based on separable, one-dimensional filters. 2 Tutorial | Time-Series with Matlab 3 Disclaimer I am not affiliated with Mathworks in any way … but I do like using Matlab a lot – since it makes my life easier Errors and bugs are most likely contained in this tutorial.
  9. Find the derivative of a piecewise function and... Learn more about derivative, piecewise, function Piecewise linear and stepwise functions in CP Optimizer: Interval variables in CP Optimizer: Basic constraints on interval variables in CP Optimizer: Constraints on groups of interval variables in CP Optimizer: Interval variable sequencing in CP Optimizer: Cumul functions in CP Optimizer: State functions in CP Optimizer: Isomorphism constraint
  10. Feb 01, 2016 · Now I want to convert it to a symbolic function, but seems MATLAB has trouble assuming p(1) and p(2) as symbol. So Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation 181-184 Dynamic partial reconfiguration FPGA Filterbank hardware implementation 2010 We introduce a novel dynamically reconfigurable 2D filterbank that is based on separable, one-dimensional filters. matlab_kmeans, programs which illustrate the use of Matlab's kmeans() function for clustering N sets of M-dimensional data into K clusters. matlab_map , programs which illustrate the use of MATLAB's mapping toolbox to draw maps of the world, countries, the US, or individual states. www.pudn.com > aam_matlab.rar > train_AAM.m, change:2014-02-12,size:7411b > aam_matlab.rar > train_AAM.m, change:2014-02-12,size:7411b
  11. A PiecewiseLinearDistribution object consists of a model description for a piecewise linear probability distribution.
  12. how to draw piecewise functions. Learn more about piecewise function, not enough arguments

 

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Then plot the B-spline with knot sequence t, as well as its polynomial pieces, by using the bspline function. bspline(t) This B-spline consists of 4 polynomial pieces: the red, green, purple, and black curves in the plot, each of degree 3. Compute zeros and integral resp. area of a piecewise linear function given by points with x and y as coordinates. Value Returns a list with the integral or area as first element and the vector as all zeroes as second. Use integral (or, if you are using an older version of Matlab, quadgk), not ntgr8 to compute these integrals, because the interval of integration is not [-1,1].To write this function, you will need to use linspace to generate the points . This week, I am getting back to my blogging roots and I want to highlight (and thank) John D'errico for a great file Exchange submission. That file is Shape Language Modeling. Recently I had some very noisy data that I wanted to fit a curve to. The problem is there were different regions that were somewhat linear, but the Nov 26, 2019 · Proposed by Donoho (1997), Dyadic CART is a nonparametric regression method which computes a globally optimal dyadic decision tree and fits piecewise constant functions. In this article we define and study Dyadic CART and a closely related estimator, namely Optimal Regression Tree (ORT), in the context of estimating piecewise smooth functions in general dimensions. More precisely, these ... Define the following function symbolically. syms y (x) y (x) = piecewise (x<0, -1, x>0, 1) y (x) = piecewise (x < 0, -1, 0 < x, 1) Because y (x) is a symbolic function, you can directly evaluate it for values of x. Evaluate y (x) at -2, 0 , and 2. Because y (x) is undefined at x = 0, the value is NaN . Hey All, I am currently trying to make a MATLAB program that will find the critical values of a multi-variable function and tell me whether each are a minimum, maximum, or saddle point. quad for multi variable functions. Learn more about quad This video shows how to find the formula of a piecewise function when given a graph. The first step is to write a definition for the graph, which is done by identifying the different domains shown in the graph. The second step is writing formulas for each domain specified by the lines in the graph. The point-slope formula is used to identify the slope and y-intercept for the leftmost domain ...

A General Note: Piecewise Functions. A piecewise function is a function in which more than one formula is used to define the output. Each formula has its own domain, and the domain of the function is the union of all these smaller domains.

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$\begingroup$ This is a question purely about the correct syntax for a matlab script. We usually consider such questions off-topic here, and on topic for the matlab forums. $\endgroup$ – Wolfgang Bangerth Dec 4 '16 at 0:41 Curve Fitting Toolbox Splines and MATLAB Splines Curve Fitting Toolbox Splines. Curve Fitting Toolbox™ spline functions contain versions of the essential MATLAB ® programs of the B-spline package (extended to handle also vector-valued splines) as described in A Practical Guide to Splines, (Applied Math. Mar 30, 2014 · Homework Statement Hey there. I'm trying to plot a piecewise function in MATLAB and I'm having some decent success, but there's some things I'm wondering.

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Matlab/octave code for all three forms of partial directed coherence (PDC) and directed transfer function (DTF)with asymptotic statistics for null hypothesis testing for multivariate single-segment analysis of connectivity.. - koisa/asympPDC What data type is valid for piecewise functions?. Learn more about piecewise, data type, matlab function Multi variable functions HomeworkQuestion I’ve just started out with Matlab and have gotten stuck on multi variable functions - aside from the documentation does anyone have any resources that I could use to get the hang of them.

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It is a waste of time to remove all loaded function after starting this function by "clear all". This does not even clean the local workspace, because there are no variables declared before. Multivariate normality tests check a given set of data for similarity to the multivariate normal distribution. The null hypothesis is that the data set is similar to the normal distribution, therefore a sufficiently small p -value indicates non-normal data. Dec 16, 2016 · Get the integral using int. >> syms F (x) >> F (x) = int (f (x),x,0,x) F (x) =. intlib::intOverSet (piecewise (x in Dom::Interval ( [0], [1]), x, x in Dom::Interval (1, 2), x - 1), x, [0, x]) Those output constructs are ugly but it's still better than going into MuPAD. Now you can do things like evaluate F (x). Piecewise-polynomial signal segmentation using convex optimization D. Angelosante G. B. Giannakis. EURASIP J. Advances Signal Process. 2012 (2012), 1, 1-16. http ... Worked example: domain & range of piecewise linear functions Video transcript - [Instructor] Consider the following piecewise function and we say f(t) is equal to and they tell us what it's equal to based on what t is, so if t is less than or equal to -10, we use this case. I think that MatLab is a bad choice to implement the finite element method even in the case of piecewise linear trial functions. It is much better to use Mathematica, Wolfram Research.

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Generating piecewise functions in MATLAB R2016A without SMT. Ask Question Asked 3 years, 9 months ago. Active 3 years, 8 months ago. Viewed 913 times 1. Using r2016a ... Sketching piecewise functions in MATLAB. Applied computing. Education. Computer-assisted instruction. Mathematics of computing. Mathematical software. Comments You cannot define that as a function in MATLAB. MATLAB functions need to have a defined value for the case where none of the conditions hold. If you were absolutely sure that one of the conditions will hold you would rewrite the Maple function without the final condition, as www.pudn.com > aam_matlab.rar > train_AAM.m, change:2014-02-12,size:7411b > aam_matlab.rar > train_AAM.m, change:2014-02-12,size:7411b Sep 01, 2010 · Among possible techniques for the approximation and circuit synthesis of nonlinear functions, we refer to a piecewise-linear (PWL) technique, since it has two main advantages [25,9,30,29]: (i) there exist well-assessed techniques for the PWL approximation (with arbitrary accuracy) of multivariate nonlinear functions; (ii) there exists hardware ... In your original formula, x(t) is linear as a function of t in each interval [n,n+1) with non-zero slope as long as > 0<x(n)<1. In the 2nd version of the code, this property is clearly violated in the final plot, where it appears to be piecewise constant in every interval even though > all 0<x(n)<1. > Piecewise function for black-scholes . Learn more about black scholes, piecewise May 30, 2016 · using vectorization and one output vector and cannot figure out. it is for a class assignment and I know it can easily be done with loops and conditional statements, but part of my lab requires it being calculated using vectorization with only one output vector. needs to be done on domain -9<=x<=9. input vector is not the problem, its calculating the piecewise defined output. please help!

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So, first of all, graphs. When you have multivariable functions, graphs become three dimensional. But these only really apply to functions that have some kind of two-dimensional input, which you might think about as living on this x y plane, and a single number as their output and the height of the graph is gonna correspond with that output. Piecewise Functions • A piecewise function is a function which is defined by multiple sub functions, each sub function applying to a certain interval of the main function's domain. 3. Piecewise Functions • We’ll show one way to define and plot them in Matlab without using loops.

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Multi variable functions HomeworkQuestion I’ve just started out with Matlab and have gotten stuck on multi variable functions - aside from the documentation does anyone have any resources that I could use to get the hang of them. Matlab Code: Independent Vector Analysis (IVA) IVA using multivariate Gaussian distribution (IVA-G) IVA using second-order uncorrelated multivariate Laplace distribution (IVA-L) IVA using second-order uncorrelated multivariate Laplace distribution and decoupled gradient optimization (IVA-L-Decp) Transfer functions are a frequency-domain representation of linear time-invariant systems. For instance, consider a continuous-time SISO dynamic system represented by the transfer function sys(s) = N(s)/D(s), where s = jw and N(s) and D(s) are called the numerator and denominator polynomials, respectively. Piecewise Function Grapher. Discover Resources. Angles in the Same Segment; UCSS Math I 5.5.1 Example 4 May 30, 2017 · The results on this window are generated according to the Matlab input given by the user. You should also have a look at Laplace Transform in MATLAB. How to use MATLAB input Function Here, in this tutorial I will explain you the importance and the procedure about How to use MATLAB input Function. If you are given a function f(x,y) and you consider the values of the function only on the constraint g(x,y) = c, where f and g are smooth functions (continuous partials). If f has a (local) max or min at point Po on the constraint then one of the following three occurs at Po: 1. ∇f = λ∇g (λ is the lagrange multiplier) 2.

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The plan was to make 3 piecewise functions for x y and z, then to plot the 3 piecewise functions. Using the following command: pwx = piecewise(0<=t<=pi/2,f1x,pi<=t<=3*pi/2,f2x,3*pi/2<=2*pi,f3x,0<=t<=pi,f4x,pi<=t<=3*pi/2,f5x) where. f1x = @(t) 2*cos(t); f2x = @(t) cos(t); f3x = @(t) 2*cos(t)+3; Nov 12, 2018 · A piecewise function is nothing more than a function that is broken into pieces and which piece you use depends upon value of \(x\). So, in the absolute value example we will use the top piece if \(x\) is positive or zero and we will use the bottom piece if \(x\) is negative.

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Let be a positively oriented, piecewise smooth, simple closed curve in a plane, and let be the region bounded by . If L and M are functions of ( x , y ) {\displaystyle (x,y)} defined on an open region containing D {\displaystyle D} and having continuous partial derivatives there, then In your original formula, x(t) is linear as a function of t in each interval [n,n+1) with non-zero slope as long as > 0<x(n)<1. In the 2nd version of the code, this property is clearly violated in the final plot, where it appears to be piecewise constant in every interval even though > all 0<x(n)<1. > The Matlab function expm(A) computes the matrix exponential eA. In contrast, exp(A) computes the elementwise exponential of the matrix A, which is usually not what you want. Time-invariant autonomous linear dynamical system Suppose ˙x = Ax, with A ∈ Rn×n (and constant). To compute x(t) = etA, we can use the code x_t = expm(t*A)*x_0; Fourier Series of Piecewise Smooth Functions Some computer algebra systems permit the use of unit step functions for the efficient derivation of Fourier series of "piecewise-defined" functions. Let the "unit function" unit t a b(, , ) have the value 1 on the interval at b≤< and the value 0 otherwise. Then

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Feb 01, 2016 · In this work, a more efficient piece-wise linear regression method is introduced based on a novel integer linear programming formulation. The proposed method partitions one input variable into multiple mutually exclusive segments, and fits one multivariate linear regression function per segment to minimise the total absolute error. Jun 01, 2015 · Two piecewise aggregate representations and some lower-bound functions for multivariate time series are proposed. According to PAA and SAX for UTS, the variable-based dimensionality should be reduced before transforming them into the center sequences.

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This is a matlab interface to the multivariate polynomial solver of IRIT. This solver is for real roots of sets of non-linear polynomial equations with the following properties: All real solutions that can be isolated from their neighbors by the subdivision tolerance (i.e. the distance between the two real solution is larger than that tolerance) are guaranteed to be detected and extracted. The arguments supplied to functions in MeshFunctions and RegionFunction are x, y. Functions in ColorFunction are by default supplied with scaled versions of these arguments. ScalingFunctions->" scale " scales the coordinate; ScalingFunctions {" scalex ", " scaley "} scales both the and coordinates. Piecewise Function with a Vector. Learn more about piecewise . ... I am writing a matlab about my work. There is a piecewise function in my code. somelike:

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Multiplying by the truth value usually works, and then you simply add the values together: y = @(x,t) ((t-5).*(t-x).*(x<(t-5)) + (t+x.^2).*(x>=(t-5))); I can't test this right now as I don't have MATLAB on my laptop, but it should work the way you want it to. Aug 21, 2020 · Piecewise smooth means that each subinterval is smooth. How to Parameterize a Function The answer to this question isn’t simple, because there are an infinite number of ways to parameterize any particular function (Du 2019). The function in this example is piecewise-linear, because each of the three parts of the graph is a line. Piecewise-defined functions can also have discontinuities ("jumps"). The function in the example below has discontinuities at x = − 2 and x = 2 . Compute zeros and integral resp. area of a piecewise linear function given by points with x and y as coordinates. Value Returns a list with the integral or area as first element and the vector as all zeroes as second.

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The following example uses the 'cubic' method to generate the piecewise polynomial form (ppform) of Y, and then evaluates the result using ppval. x = 0:.2:pi; y = sin(x); pp = interp1(x,y,'cubic','pp'); xi = 0:.1:pi; yi = ppval(pp,xi); plot(x,y,'ko'), hold on, plot(xi,yi,'r:'), hold off Algorithm. The interp1 command is a MATLAB M-file. w2 (i,1) = w; % w2 angular velocity (rad/s) a2 ( i, 1) = a; % a2 angular acceleration (rad/s^2) th2 ( i, 1) = i * pi / 180; % radiant. th2d ( i, 1) = i; % degree. % first. if (i) < 90. h1 (i,1) = 0; v1 (i,1) = 0; a1 (i,1) = 0; Jan 19, 2018 · Multivariable piecewise function fit matlab. Learn more about gaussian functions, curve fitting, asymmetric curve fitting Contribute to TadasBaltrusaitis/FERA-2015 development by creating an account on GitHub. Jul 16, 2012 · Here is a graph of the entire function, produced by interpgui from NCM, Numerical Computing with MATLAB. x = 1:6; y = [16 18 21 17 15 12]; interpgui(x,y,3) sppchip I just made up that name, sppchip. It stands for shape preserving piecewise cubic Hermite interpolating polynomial. The actual name of the MATLAB function is just pchip. We have tried to break down a typical process of multivariate data analysis, in trying to identify key components. We then built a fully object-oriented toolbox, with an object fitting each of those key components. Data objects. We have identified three entities, which are the building blocks of any multivariate data process. This week, I am getting back to my blogging roots and I want to highlight (and thank) John D'errico for a great file Exchange submission. That file is Shape Language Modeling. Recently I had some very noisy data that I wanted to fit a curve to. The problem is there were different regions that were somewhat linear, but the Apr 10, 2006 · Undefined function or method 'piecewise_eval' for input arguments of type 'cell', though that seems to be the syntax specified by the function. Here is what I am trying to do: x = linspace(-4,4,200); MATLAB Companion for Multi Variable Calculus by Jeffery Cooper, 2001 November 06, 2011 Vectorized piecewise functions; November 02, 2011 Method of continuity for solving nonlinear equations - Part II; November 01, 2011 Method of continuity for nonlinear equation solving; October 31, 2011 Matlab meets the steam tables; October 30, 2011 Smooth transitions between discontinuous functions Need to calculate the domain and range of a graphed piecewise function? Learn how with this free video lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).