This is true with logarithms, too: If x = y, then log Another kind of exponential equation has exponential expressions on both sides.
While this change-of-base technique is not particularly useful in this case, you can see that it does work.
(Try it on your calculator, if you haven't already, so you're sure you know which keys to punch, and in which order.) You will need this technique in later problems.
In this section we will now take a look at solving logarithmic equations, or equations with logarithms in them.
We will be looking at two specific types of equations here.