1. ## Natural Logarithm

I am trying to evaluate $lnbase7of10$ but I am not sure how to go about doing so. Any pointers?

2. Originally Posted by B.Major
I am trying to evaluate $lnbase7of10$ but I am not sure how to go about doing so. Any pointers?
Do you mean $\log_7(10)$ ?

If so: Use the base-change-formula:

$\log_b(n)=\dfrac{\ln(n)}{\ln(b)}$