Properties of Logarithms
Logarithmic & Exponential Form
Logarithmic Equations
Solving
Log = Log
100

If there is no base in a logarithm what does it automatically equal? 

10

100

what is the equation for logarithmic form?
Given: b= a

logba=x

100

what is the first step when solving logarithmic equations? log x + log 5 = 3

Condensing the logarithm

100

logx16 = 4

x= 2

100

log x = log 5

x =5

200

In a logarithm subtraction goes with what? 

Division

200

what is the formula for exponential form?

Given: logba=x

bx=a

200

If  two logs have the same base then what can you do? 

cross them out and solve like a regular math equations. 

200

log5 + log2 = x

x= 1

200

log45x = log4 (2x + 9)

x = 3

300

In a logarithm adding goes with what? 

Multiplication

300

convert into exponential form: log39=2

32=9

300

At the end when checking your answer what can NOT be in the logarithmic equation?

log ( ?) = 5

A negative

300

log33 = log3x - log33

x= 9

300

log23x + log23 = log263

x = 63

400

Where should you move the exponent to? 

logkmw

the front: wlogkm

400

convert into logarithmic form:132=168

log13168=2

400

Solve: log9(6-3w)=log9(-2w)

No Solution

400

2x+1= 32

x= 4

400

log2(x+2) + log25 = log220

x = 2

500

If you Condense: 2log3X, where does the 2 move to?

on the exponent of 8.

500

convert into log form: 83= 6

log86=3

500

Solve: log5 + log20 = x

x= 2

500

9x-1= 81x

x= -1

500

log 4x - log 8 = log 31

x = 62

600

Evaluate. 


64

600

Evaluate

UNDEFINED 

A logarithm of a negative number does not exist in set of real numbers. 

600

log(x+2) = log(x-1) + logc (x-2)

x=4

600

2x+4 + 8=164

x = 4

600

log(x+2) = log(x-1) + logc (x-2)

x=4