# Logarithms 11 - Common and Natural Log

Taught by YourMathGal
• Currently 4.0/5 Stars.
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Lesson Summary:

In this lesson, we learn about common logarithms (base 10) and natural logarithms (base e). We explore how to use a calculator to solve logarithmic problems, and work through several examples to deepen our understanding. We also learn about the properties of logarithms, such as how to estimate them, and how to use them to solve problems involving exponentials. This lesson is a great introduction to logarithms for anyone looking to improve their math skills.

Lesson Description:

Defines common log, log x, and natural log, ln x, and works through examples and problems using a calculator. .

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

• How do you evaluate log 100?
• What is common log or log x?
• What is natural log or ln x?
• How do you evaluate log .001?
• How do you evaluate log 13 on a calculator?
• How do you evaluate log 6 on a calculator?
• How do you evaluate ln 10 on a calculator?
• How do you evaluate ln 213 on a calculator?
• How do you evaluate ln e^5?
• How do you evaluate ln square root of e?
• How can you use a scientific or graphing calculator to evaluate log or ln?
• What is the number e?
• #### Staff Review

• Currently 4.0/5 Stars.
This lesson explains the common and natural logarithms and shows how to calculate the value of logarithms by hand or using a scientific / graphing calculator, depending on the problem. The steps involved in evaluating these example logarithm problems are explained very clearly.