# Math Help - Logarithms help

1. ## Logarithms help

Suppose f(x)= 10^-x, find f[log[1/10]]. How do you solve this? Are they looking for Inverse??

Thanks,

Joe.

2. Originally Posted by usrnme14
Suppose f(x)= 10^-x, find f[log[1/10]]. How do you solve this? Are they looking for Inverse??

Thanks,

Joe.
Note that $\log\left(\tfrac{1}{10}\right)=\log\left(10^{-1}\right)=-\log\left(10\right)=-1$

So what do think that $f\left(-1\right)$ equals?

3. 10?

4. Originally Posted by usrnme14
10?