BELL RINGER (IN MATH JOURNAL) What are the laws of exponents? 1. x m x n = 2. x m = x n 3. (xy) n =...

BELL RINGER (IN MATH JOURNAL)

What are the laws of exponents?1. xmxn =2. xm = xn

3. (xy)n =4. (x)n = (y)5. x –n =6. x0 =7. (x m)n =

LOGARITHMS

Wednesday, April 16, 2014

Exponential

GRAPHS

Logarithmic

INVERSE

NOTES

The inverse of an exponential function is a logarithmic

function.

To convert from an exponential to a log –>

25 = 32 is log2 32 = 5

Calculators only do log10 which is called “common log”

So log is really log base 10.

PROPERTIES OF LOGS-- NOTES

1) logb mn = logb m + logb n

2) logb m = logb m – logb n

n 3) logb mp = p logb m

BELL RINGER (IN MATH JOURNAL)

1.How can you convert from exponential to logarithmic form?

2.What base is the log button on your calculator?

3.What are the properties of logs?

LOGARITHMIC EQUATIONS

Thursday, April 17, 2014

NOTES

To convert from logarithm to an

exponential

log2 32 = 5 → 25 = 32

SOLVING LOG EQUATIONS

1.If possible, get log of the

same bases equal and “drop

the log.”

2.If not, then change to

exponential form and solve.

CHANGE OF BASE

logca =