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An introduction to logarithmsAbout Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We...
After reading this text and / or viewing the video tutorial on this topic you should be able to: explain what is meant by a logarithm. state and use the laws of logarithms. solve simple equations requiring the use of logarithms.
1.2 Logarithms We use can logarithms to solve exponential equations: The solution of ax = b is x = log a b For example, the solution of ex = 2 is x = log e 2. To find the value of this logarithm, we need to use a calculator: log e 2 = 0.6931. Note Logarithms were invented and used for solving exponential equations by the Scottish baron
This introduction to logarithms video explains what a logarithm is, how to read and write logs, and what bases we can use for them. We show you how to convert logarithmic form to...
Course: Algebra 2 > Unit 8. Lesson 1: Introduction to logarithms. Intro to logarithms. Intro to Logarithms. Evaluate logarithms. Evaluating logarithms (advanced) Evaluate logarithms (advanced) Relationship between exponentials & logarithms. Relationship between exponentials & logarithms: graphs.
What does it mean? First of all the assumptions (restrictions) are important. The number a, called the base of the logarithm, has to be greater than 0 and cannot be equal to 1. The number b (which we take the logarithm of) has to be greater than 0. So the expressions like log1 3, log 2 5 numbers (similarly to expressions like. p or log4( 6).
Introduction to Logarithms -A logarithm is the inverse function for an exponent; therefore, we will review exponential functions first. Review of Exponential Functions -An exponential function has the general form (𝑥)=𝑏𝑥, where 0<𝑏<1, or 𝑏>1. -b is called the base and x is called the exponent.