Understanding Logarithms

This video tutorial covers section 3.3 on properties of logarithms. It explains how to expand logarithms into addition and subtraction problems, combine them back into a single expression, and use the base change formula. The tutorial revisits concepts from Algebra 2, such as multiplication and division within logarithms, and demonstrates shortcuts for simplifying expressions. It also explains how to use calculators for base changes, comparing natural and common logs, and finding exponents.

What is the primary purpose of expanding logarithms?

• To convert them into multiplication problems

• To simplify them into addition and subtraction problems

• To make them more complex

• To change their base

When expanding a logarithm with multiplication inside, what operation is used?

• Addition

• Division

• Exponentiation

• Subtraction

How can you express log(a^2) in terms of log(a)?

• log(a) - log(a)

• 2 * log(a)

• log(a) + log(a)

• log(a^2)

Tags

CCSS.HSN.RN.A.2

What is the fractional exponent equivalent of a square root?

• 3

• 1/3

• 1/2

• 2

In the expression log(x * sqrt(y)), how can sqrt(y) be rewritten?

• y^(-1)

• y^(1/2)

• y^1

• y^2

What does addition inside a logarithm indicate when combining them?

• The terms are squared

• The terms are multiplied

• The terms are divided

• The terms are subtracted

How would you express log(a^6) when combining logarithms?

• log(a) - log(6)

• log(a^6)

• log(a) + log(6)

• 6 * log(a)

What is the base change formula used for?

• Finding the square root of a logarithm

• Simplifying logarithms into addition

• Converting logarithms into exponential form

• Changing the base of a logarithm to any desired base

Which two bases are commonly used in the base change formula?

• Base 4 and base 8

• Base 3 and base 7

• Base 10 and base e

• Base 2 and base 5

How do you calculate log base 2 of 5 using the base change formula?

• ln(5) / ln(2)

• log(5) * log(2)

• ln(2) / ln(5)

• log(5) + log(2)