How are you all doing? Any questions about anything?

Quick review..

Identify the error in these equations1. n (6) = ln (3)2. ln(x + 5) = ln x + ln 53. ln (x + y2) = ln (x ● y2)4. ln (x - y2) = ln (x / y2)5. Domain of log b x = [0, ∞)

Week 2 – Concept QuestionsSection 3.4

• Section 3.4

Exponential and Logarithmic Equations

Explain how to solve and Exponential equation when both sides can be written as a power of the same base.

Explain how to solve an exponential equation when both sides ‘cannot’ be written as the power of the same base.

Use 3x = 50 in your explanation.

Explain the differences between solving log 3 (x-1) = 4

andlog 3 (x-1) = log 3 4

Does this statement makes sense?

• It’s important for me to check that the proposed solution of an equation with logarithms gives only logarithms of positive numbers in the original equation.

Solve

Solve

Solve 2|ln x | - 6 = 0

Solve ln 3 – ln(x+5) – ln x = 0

Solveln(x-5) – ln(x+4) = ln(x-1) – ln(x+2)