Logarithms are the inverses of exponents. They allow us to solve challenging exponential equations, and they are a good excuse to dive deeper into the relationship between a function and its inverse.

Videos from Khan Academy teaching students ALGEBRA II with focus on exponential and logarithmic functions.

Test your understanding of Exponential & logarithmic functions with these 38 questions.

We'll again touch on systems of equations, inequalities, and functions...but we'll also address exponential and logarithmic functions, logarithms, imaginary and complex numbers, conic...

The graph of y=log base 2 of x looks like a curve that increases at an ever-decreasing rate as x gets larger. It becomes very negative as x approaches 0 from the right. The graph of y=-log base 2 of x is …

We'll again touch on systems of equations, inequalities, and functions...but we'll also address exponential and logarithmic functions, logarithms, imaginary and complex numbers, conic...

Test your understanding of with these 38 questions.

The concept of logarithm as the inverse of exponentiation extends to other mathematical structures as well. However, in general settings, the logarithm tends to be a multi-valued function. For example, …

Learn about the properties of logarithms that help us rewrite logarithmic expressions, and about the change of base rule that allows us to evaluate any logarithm we want using the calculator.

Mar 27, 2014 · Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra2/logarithms-tutorial/logarithm_basics/e/understanding-lo...