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Code to solve integral with cosine and theta

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Rachel Bowlin
Rachel Bowlin 2021-6-16
评论： Rachel Bowlin 2021-6-16
How do I solve the following equation in Matlab?
∫(cos^2(θ))dθ with pi/2 as the max and 0 as the min.

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Chunru
Chunru 2021-6-16
Ran in:
  • integrate it manually
  • integrate it symbolically
syms x
f(x) = cos(x).^2
f(x) = 
int(f(x), 0, pi/2)
ans = 
  • integrate it numerically
x = linspace(0, pi/2, 101);
trapz(x, cos(x).^2)
ans = 0.7854

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