### Home > CALC > Chapter 5 > Lesson 5.3.3 > Problem 5-130

5-130.

OLD SOFTWARE

Old computer programs used to only allow exponentials with a certain base (like your calculator only lets you use certain types of logs). If you needed an exponential in a different base, it had to be converted first. To the right is the procedure for changing a base into an exponential function with base

Notice the second step of the model problem above. It is the Power Law of Logarithms; this law will become more and more necessary as this course progresses.