You can have MATLAB compute the values at and 0. You can check that this is right except at the and at 0 by plotting. Piecewise Functions Let’s assume a function with 4 intervals 2 0 6 2 0 3 ( ) 2 if x x if x + < x x if x - + + < 6 11 3 8 - < if x. We’ll use a vectorized way: no scalar values or iterations will be used. Assign values to y based on the x value 4. Use logical if statement to define the piecewise function 3. Heaviside(2 - x)*heaviside(x) - heaviside(-x)*heaviside(x + 2) Piecewise Functions We’ll show one way to define and plot them in Matlab without using loops. Make the vector of x array with 0.1 increments 2. Exampleĭefine a symbolic MATLAB function which is equal to if and is equal to if This is Boyce and DiPrima, Section 10.2 #19.į = -heaviside(x+2)*heaviside(-x)+heaviside(x)*heaviside(2-x) When you plot multiple lines in the same axes, the axis limits adjust to incorporate all. Specify the color of the plotted lines as blue using 'b'. Specify the plotting intervals using the second input argument of fplot.
From here, plot the outputs against the inputs using the plot() command. Plot a piecewise function of two variables closed Ask Question Asked 4 years, 3 months ago. Afterwards, pass each value in the matrix to the piecewise() function. One workaround I found is to store the values you want to test in a matrix. The unit step function is known to MATLAB as heaviside, with the slight difference that heaviside(0)=1/2. Specify Plotting Interval and Plot Piecewise Functions. function yf(t) y1(-3t).(-pi
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