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.

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 …

This topic covers: - Radicals & rational exponents - Graphs & end behavior of exponential functions - Manipulating exponential expressions using exponent properties - Exponential …

Sal solves the equation log (x)+log (3)=2log (4)-log (2). Created by Sal Khan and Monterey Institute for Technology and Education.

Sal explains what logarithms are and gives a few examples of finding logarithms.

Learn how to rewrite any logarithm using logarithms with a different base. This is very useful for finding logarithms in the calculator!

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 …

Tanasha needs to solve the equation 3.6 = log 10 x . She calculates that the approximate solution is x ≈ 3,981 . Is Tanasha's solution reasonable?

Evaluate basic logarithmic expressions by using the fact that a^x=b is equivalent to log_a (b)=x.

Learn how to solve any exponential equation of the form a⋅b^ (cx)=d. For example, solve 6⋅10^ (2x)=48. The key to solving exponential equations lies in logarithms! Let's take a closer look by …