plot a sym function in matlab

To plot a symbolic function in Matlab, you first need to convert the symbolic function to a numeric function that Matlab can plot. Here's how you can do it:

main.m
syms x
f = x^2 + 3*x - 5;  % Define your symbolic function
f_numeric = matlabFunction(f);  % Convert symbolic function to a numeric function

fplot(f_numeric, [-10, 10]);  % Plot the numeric function in the range [-10, 10]
title('Plot of a symbolic function');
xlabel('x-axis');
ylabel('y-axis');
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In this example, f is a symbolic function, and f_numeric is its numeric equivalent. By using fplot function, you can now plot the numeric function f_numeric in the specified range.