how to calculate the integral of a function in matlab

To calculate the integral of a function in MATLAB, you can use the quad function, which is a numerical integration method that approximates the integral using a quadrature formula.

The syntax for using quad is:

main.m
Q = quad(fun,a,b)
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where fun is a function handle that represents the integrand, a is the lower limit of integration, and b is the upper limit of integration. The result of the integral is returned in Q.

For example, to calculate the integral of the function y = x^2 from 0 to 1, you can define the function as a separate file or as an anonymous function using the @(x) syntax:

main.m
fun = @(x) x^2;
Q = quad(fun,0,1)
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This will return the value of the integral as Q.