payshencec21

29.01.2020 • 

Mathematics

How to find the derivative of cos^2x? i seem to be confused.
i was told to use the chain rule, but i don't see how it can apply.
can't i just substitute (cos x)(cos x) in its place and then use the product rule? isn't cos^2 x = (cos x)(cos x)?
let me know if i am right. if not, then explain how to use the chain rule ; how are you getting: ?

Ответ:

LilDicky

17.01.2022

Mathematics

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The answer is as follows
-2sin^2x

explanation:
d(cos^2x)/dx= -sin^2x × d(2x)/dx
= -2sin^2x

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Ответ:

naimareiad

26.07.2020

Mathematics

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factor a trinomial to (10+x) (8+x)
 hope it helps

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