Need help with derivitives.

I'm trying to take the derivatives of the following two functions:

1. f(x)= 8x^3x

for this, I get f'(x)=8x^3x[3(ln8x)+(3x*(1/8x)*8)]

-- can someone check the answer for this.

2. f(x)= 9x^ln(x)

those are the only ones that I am having trouble with

 

1) This is what I got:

24x^3x(3(log(x) + 1)^2 + (1/x))

2) I got:

18x^(log(x)-2) * (2(log(x))^2 - log(x) + 1)

 

1. Do you mean 8x^(3x)?...cause that's quite different from 8x^3x.

 

Thanks for the help guys. I finally was able to get them.