What is a Logarithm
A higher number represented by a base and exponent
Write the exponent in logarithmic form:
35=243
If log2(x)=2, solve for x
x= 42 or 16
When do students generally first learn about logs?
Algebra (1 or 2)
Convert Mx=N to Logarithmic form
logm(N)=M
What is log0?
Undefined
Write the exponent in logarithmic form:
52=25
log5(25)=2
log2(x)=2
x=4
If log2(y/3)=4, solve for y
y=48
What does the 2 represent in this equation?
23=8
the base
What is equal to log?
log10
log1
0
log2(x)+log2(x-2)=3
x=4
logx8=3
x=2
log5125=?
3
When did we start learning about logs?
A. Beginning of the year (Aug-Nov)
B. Middle of the year (Dec-Feb)
C. End of the year (Mar-May)
B. Middle of the year (Dec-Feb)
Solve log4(16)
2
x=-4
What kind of operation is a logarithm? (Hint: how it relates to other operations)
The inverse operation to exponentation
What mode on the calculator would be best for this equation?
42(16)
Who invented Logarithms?
John Napier
Solve log28
1.45
log9(9)
1
log2(x2)=(log2(x))2
x=1,4
log497 – log864
-(3/2)