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# simple p5 integration watch

1. i cant remember how to this simple thing !!

sin^4x ... but not using reduction ...

if n e one can help tht would b great
2. sin^4 x = sin^2 x(1 - cos^2 x) = sin^2 x - 1/2*sin^2 (2x)
Then use cos(2x) = 1 - 2sin^2 x and cos(4x) = 1 - 2sin^2 (2x)
3. (Original post by Bezza)
sin^4 x = sin^2 x(1 - cos^2 x) = sin^2 x - 1/2*sin^2 (2x)
Then use cos(2x) = 1 - 2sin^2 x and cos(4x) = 1 - 2sin^2 (2x)
thanks for the help

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