Math, asked by Divyankasc, 1 year ago

#2 Have I solved it right?

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Answered by FlameFires

Um.. You could've simplified the function into sin^2x in the first step and that would've made the whole solving way easier..While dealing with trigonometric functions it's advisable to convert it into a combination of least number of trigonometric functions as possible. For example if there is tanx/sec x you can write it as sinx. Even in mid steps you have used the functions directly instead of simplifying them. I believe the answer you've got is possibly wrong..

Divyankasc: I do understand!!

FlameFires: Good.

Divyankasc: I did it d(sinx sinx)/dx

Divyankasc: 2sinx cosx

Divyankasc: Yess!!

FlameFires: Exactly. Which is equal to sin2x.

Divyankasc: Oh thankyouu!! :D

FlameFires: Oh lol. Yes you could do it that way too xD but it becomes tougher if instead of square, it was a power five or such, in which case, chain rule is super easy.

Divyankasc: I see. Well, I am really thankful!

FlameFires: :)

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