Logarithm verification

1. Jan 13, 2010

magnifik

1. The problem statement, all variables and given/known data
Verify the formula logbx = logax/logab for a, b > 0

2. Relevant equations

3. The attempt at a solution
I don't even know how I would go about starting this...

2. Jan 13, 2010

rock.freak667

If we let z=logbx, then what is 'x' equal to in terms of 'z' and 'b'?

3. Jan 13, 2010

magnifik

x=bz
???

4. Jan 13, 2010

rock.freak667

and if you take the loga of both sides of the equation, what does it reduce to?

5. Jan 13, 2010

magnifik

omg thanks so much! lol that was a lot easier than i thought it would be