Adding and Subtracting Rational Expressions

This video tutorial covers solving logarithmic equations using the one-to-one property and checking for extraneous solutions. It includes examples of equations where log equals log and where log equals a number, demonstrating how to solve these equations and verify solutions.

What property allows us to state that if log base B of M equals log base B of N, then M equals N?

• Quotient Rule

• Product Rule

• Power Rule

• One-to-One Property

What does the 'log equals log' type of equation rely on for simplification?

• Isolating the logarithm

• Using the one-to-one property of logarithms

• Applying the quotient rule

• Converting to exponential form

Why is it important to check for extraneous solutions in logarithmic equations?

• To simplify the equation further

• To convert the logarithmic form to exponential form

• To apply the power rule correctly

• To ensure the solution is within the domain of logarithmic functions

In solving log base 2 of (1 - 4n) equals log base 2 of (2n + 43), what is the first step after applying the one-to-one property?

• Check for extraneous solutions

• Subtract 43 from both sides

• Condense the logarithm

• Isolate the variable n

Why is it possible to have a negative value for the variable in a logarithmic equation as long as the log expression is not negative?

• Because the domain of logarithmic functions allows negative numbers

• Because the base of the logarithm can be negative

• Because the logarithm of a negative number is undefined

• Because the variable itself does not determine the domain of the function

Tags

CCSS.HSF.BF.B.5

What is the result of setting the equation x squared plus 7x minus 18 equals 0 to zero and factoring?

• x equals -5 and x equals 3

• x equals -9 and x equals 2

• x equals 9 and x equals -2

• x equals 5 and x equals -3

Tags

CCSS.HSA-REI.B.4B

When solving logarithmic equations where 'log equals a number', what is the second step after isolating the logarithm?

• Check for extraneous solutions

• Convert to exponential form

• Apply the power rule

• Solve for the variable

What does condensing a logarithmic equation involve?

• Applying the exponential form to the equation

• Isolating the logarithm on one side of the equation

• Converting all logarithms to have the same base

• Combining multiple logarithms into a single logarithm

What is the base in the exponential form when converting a logarithmic equation with an invisible base?

• e (Euler's number)

• 2

• The variable of the equation

• 10

Tags

CCSS.HSF.BF.B.5

How do you solve for x when given log base 10 of x squared minus 3x equals 1?

• Applying the one-to-one property

• Using the quotient rule

• Converting to exponential form and then isolating x

• By factoring the quadratic equation

Tags

CCSS.HSF.BF.B.5