Solving Logarithmic Equations Made Easy

The video tutorial introduces logarithms and exponential functions, focusing on solving equations involving these concepts. It covers various techniques and properties of logarithms, demonstrating how to simplify and solve different types of equations, including quadratic ones. The importance of checking solutions is emphasized to ensure accuracy.

What is the result of 4 cubed?

• 32

• 256

• 16

• 64

Tags

CCSS.8.EE.A.2

What is the correct way to solve a logarithmic equation?

• By always factoring the equation

• By isolating the logarithm on one side

• By converting logs to their exponential form

• By always using the property of quotients

What does log of 30X divided by 6 simplify to?

• log of 180X

• log of 6X

• log of 5X

• log of X

What is the value of X when log of 5X equals 4?

• 500

• 4000

• 1000

• 2000

Tags

CCSS.HSF.BF.B.5

What property allows the exponent to be brought in front of the log?

• Property of products

• Property of exponents

• Property of logarithms

• Property of quotients

What is the value of X when log base 3 of X squared equals 8?

• 243

• 27

• 81

• 9

Tags

CCSS.HSF.BF.B.5

What does the equation log X plus log of X plus 3 equal to 1 simplify to?

• log of X squared plus 3X equals 10

• log of X times (X plus 3) equals 10

• log of 2X plus 3 equals 10

• log of X plus X plus 3 equals 10

What are the possible values of X for the equation log X plus log of X plus 3 equals 1?

• X equals 0 and X equals 3

• X equals 2 and X equals -5

• X equals 3 and X equals -2

• X equals 1 and X equals 5

Why is X equals -5 not a valid solution for the equation log X plus log of X plus 3 equals 1?

• Because it does not satisfy the original equation

• Because it results in a negative number inside the log

• Because it results in a log of zero

• Because it is not a real number

What is an important step after finding the values of X in a logarithmic equation?

• Adding 1 to the result

• Substituting back into the original equation to check for validity

• Multiplying the result by the base of the logarithm

• Dividing the result by 2