define an integral from 0 to pi in matlab

You can define an integral in Matlab using the integral function. The syntax for defining an integral from 0 to pi is as follows:

main.m
f = @(x) sin(x);  % define function to integrate
integral(f, 0, pi)  % evaluate integral from 0 to pi
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This will integrate the sin(x) function from 0 to pi and return the result as a numerical value. You can replace sin(x) with any other function you want to integrate.