Can someone find the derivative of y=ln (cos(x^2+4)/cos(x^2+9))^5

Question

Can someone find the derivative of  y=ln (cos(x^2+4)/cos(x^2+9))^5

raden · Answer

u need the division rule, also the chain rule

anonymous · Answer

I know, I just made it up to practice and I need someone else to work on it so I know I get the right answer.

raden · Answer

have u tried that ?

anonymous · Answer

I'm working on it right now. I just need someone else to work on it too so I have something to check my answer with

raden · Answer

Oh, great... :)
i afraid my answer will wrong :P

anonymous · Answer

i'm still working on my answer

anonymous · Answer

I'm having a hard time putting my answer into the equation option on here, post your answers and I will work on posting mine

anonymous · Answer

$$5\ln \frac{(\cos(x^2+4)) }{(\cos(x^2+9)) }\frac{ (-2xsin(x^2+4)\cos(x^2+9))-(-2xsin(x^2+9)\cos(x^2+4)) }{(\cos(x^2+4)(\cos(x^2+9)) ? }$$

anonymous · Answer

@RadEn  and @Hoa  I posted my answer

anonymous · Answer

I guess mine is wrong?
 @jim_thompson5910  @Directrix can you come and give the answer to this question?

raden · Answer

wait. is that like :
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