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How to write a function that takes an interval [a,b] and a function f(x) and computes the integral of f(x) from a to b using the Trapezium rule.

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Sarah Molina Esteves
回答： Mathieu NOE 2020-10-26
How to write a function that takes an interval [a,b] and a function f(x) and computes the integral of f(x) from a to b using the Trapezium rule? Then, how do I use it on f(x)=sin(x) with [a,b]=[0,pi/2]?

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Mathieu NOE
Mathieu NOE 2020-10-26
hello
refer to trapz and cumtrapz functions
example below
a = 0;
b = pi/2;
x = linspace(a,b,100);
y =sin(x);
out_integral = trapz(x,y);

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