Differentiation question

[Leah5467]

The missing part=(4x-1)^2

I don't know how to simplify it and solve it
Please help! Thank you!

 

[Harry_the_cat]

Have you learnt the quotient rule?

 

[Leah5467]

Not yet.?

 

[HallsofIvy]

Okay, well probably you are expected to multiply out the square in the numerator: \(\displaystyle \frac{(4x- 1)^2}{x^2}= \frac{16x^2- 8x+ 1}{x^2}= 16- 8x^{-1}+ x^{-2}\). Can you differentiate that?

 

[hoosie]

 

[hoosie]