# Math Help - Homework Problem

1. ## Homework Problem

Hi,
1.How would you differentiate (6^x)log_4 (x)? Note that the underscore here indicates subscript here.

2. Solve for f'(x) given that :
d/dx(f(4(x^5))=6(x^2)

Thanks a lot.

2. Originally Posted by sgupta
Hi,
1.How would you differentiate (6^x)log_4 (x)? Note that the underscore here indicates subscript here.
You will need to use the product rule here.

But recall that:

$\frac{d}{\,dx}\left[a^x\right]=a^x\ln a$

and

$\frac{d}{\,dx}\left[\log_a x\right]=\frac{1}{x\ln a}$

Can you take this one from here?

--Chris

3. Thanks,So this means..