Logarithmic Equations and Properties

The video tutorial explains how to solve logarithmic equations by combining logarithms and using properties of logarithms. It covers two examples: one with common logarithms (base 10) and another with natural logarithms (base e). The tutorial emphasizes the importance of considering the domain of the logarithms to ensure valid solutions. It demonstrates solving a quadratic equation and highlights the need to check the domain restrictions for valid solutions.

What is the first step in solving logarithmic equations where each term is a logarithm?

• Convert the logarithms to exponential form

• Combine the logarithms

• Subtract the logarithms

• Divide the logarithms

In the first example, what property is used to combine the common logarithms?

• Product property

• Power property

• Quotient property

• Change of base property

Tags

CCSS.HSA.REI.A.2

What is the solution for x in the first example after considering the domain?

• x = 4/5

• x = 0

• x = 1

• x = 5/4

What type of logarithm is used in the second example?

• Common logarithm

• Decimal logarithm

• Binary logarithm

• Natural logarithm

How are the natural logarithms combined in the second example?

• By dividing the number parts

• By multiplying the number parts

• By adding the number parts

• By subtracting the number parts

What type of equation is formed after combining the natural logarithms in the second example?

• Exponential equation

• Cubic equation

• Quadratic equation

• Linear equation

What is the greatest common factor used in factoring the quadratic equation?

• x - 7

• x + 7

• 7

• x

Tags

CCSS.HSA.REI.A.2

Which value of x is not a valid solution due to the domain restriction in the second example?

• x = 4

• x = 3

• x = 0

• x = 7

Tags

CCSS.HSA.REI.A.2

What is the valid solution for x in the second example after considering the domain?

• x = 4

• x = 7

• x = 0

• x = 3

Why is x = 7 considered a valid solution in the second example?

• Because it is equal to 4

• Because it is less than 4

• Because it is less than 0

• Because it is greater than 4