Question

r=sin(4-2theta)

Answer 1

\[Find dr/d \theta. r=\sin (4-2\theta)\]

Answer 2

@zepdrix

Answer 3

ambra te paundi hai udariyan

Answer 4

Hmm so what would the derivative of \(\large \sin\theta\) be?
This is another one of those problems where we'll have to work with the chain rule. :)

Answer 5

phul koi vilayti ala lae gaya udd main reh gaya kyarian

Answer 6

cos theta

Answer 7

ur previous question was solved @lovesit2x

Answer 8

ho attiye kapurthaliye

Answer 9

yes it was, thanks for your help @mathsmind

Answer 10

Yes good!
Since the inside of the sine is more than just \(\large \theta\), we have to apply the chain rule, multiplying by the derivative of the inside.

\[\huge r'=\cos(4-2\theta)\color{royalblue}{\left(4-2\theta\right)'}\]

Answer 11

cos(4-2theta) (-2) ?

Answer 12

Understand the process? We took the derivative of sine, which gave us cosine (with the same contents inside of it). And then we make a copy of the inside, and multiply by it's derivative.

Answer 13

Yah sounds good!

Answer 14

:D yay!!

Answer 15

\[\huge r'=-2\cos(4-2\theta)\]Yay!