Derivatives of Logarithmic Functions -Fractions-

Hello everyone.

I got a question regarding the derivatives of a log but in a fraction. Here is an example:

3x^2 / ln(x)

This isnt a homework problem but im studying for a quiz tomorrow and want to be ready for anything. Would I use the quotient rule for this problem?

Also another quick question. Its kind of stupid so sorry.

But in this question how do i get from step 1 to step 2.

x= 1

y = sin (7 ln(x))

(derivative) dx/dy y= cos(7ln(x)) (7/x)

Step 1: y(1) = cos (7ln(1)) (7/1)

Step 2: y(1) = cos **(0)** (7)

Im guessing ln (1) = 0 ?

thanks for your help