Find Values of X That Are Correct to Three Decimal Places

Honors Math 3 Name______Unit 7: (Ch 8) Exponential & Logarithmic Functions

More with Log Properties Warm-up 1. Solve the following exponential equations by expressing x using logarithms. You don’t need to find the decimal value. a. b. c.

d. e. f.

g. h. i.

How can we find the value of any logarithm using only base 10??

For You to Do: 2. Solve for x to 3 decimal places using only the LOG button (assume calculator has only base 10). a. b. c.

d. e. f. 3. Use the properties of logarithms to solve the following logarithmic equation. Hint:

Now, check your answers by plugging into the original equation. What do you notice?

4. a. Prove using the definition of logarithms.

b. Prove using the change of base property.

Homework: page 630 #2, 6, 7, 16, 18 and page 637 #1-3, 8, 10, 12