2. Exponents – Logarithms xy -31/8 -2¼ ½ 01 12 24 38 xy 1/8-3 ¼-2 ½ 10 21 42 83 The function on the right is the inverse of the function on the left.

3. Definition of a logarithm The inverse of can be defined as. In general, the inverse of is. y is called the LOGARITHM of x, and is usually written as and is read y equals log base b of x.

4. Log to Exponential Form

10. Exponent to Logarithm

13. Evaluate Logarithmic Expressions

25. Inverse Properties of Logs and Exponents

30. Assignment 10.1 – Exponential Equations – p. 535, 4 – 11