turunan trigono
-
f (x) = (sin³x - cos³x) / (sin x - cos x)
f (x) = sin²x + sin x . cos x + cos²x
maka,
f' (x) = 2sin(x) cos(x) + cos²x - sin²x - 2cos(x) sin(x)
f' (x) = cos²x - sin²x
f' (x) = cos 2x
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turunan trigono
-
f (x) = (sin³x - cos³x) / (sin x - cos x)
f (x) = sin²x + sin x . cos x + cos²x
maka,
f' (x) = 2sin(x) cos(x) + cos²x - sin²x - 2cos(x) sin(x)
f' (x) = cos²x - sin²x
f' (x) = cos 2x
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