# Math Help - slove c = log (a + b)

1. ## slove c = log (a + b)

Dear all
This is the question: How to solve the variable of f

thank u for any help!!

Mattew

You can't.

3. ## Re: slove c = log (a + b)

Looks like an equation from fluid mechanics You can find an approximation (to any finite degree of accuracy) using Newton's method - Wikipedia, the free encyclopedia but you will not get an exact answer for f and you cannot get f on its own in the formula.