# Thread: Solve for x with exponents

1. ## Solve for x with exponents

Hey, guys.

I can't seem to remember how to solve for $x$ in situations like this:

$xa^x=b$

(where $a,b$ are real constants).

Any ideas?

Thanks!

2. Originally Posted by hatsoff
Hey, guys.

I can't seem to remember how to solve for $x$ in situations like this:

$xa^x=b$

(where $a,b$ are real constants).

Any ideas?

Thanks!
Algebraically you cannot solve, you must use an iterative method:

$ln(x) + x\,ln(a) = ln(b)$