7.4-7.5 Flashcards
1
Q
Exponential form and log form
A
Ex- base ^exponent=#
Log- log(base)^#=exponent
2
Q
What does evaluate
Log(3)^81 mean
A
Means 3 to what power gives you 81
3
Q
Common log base
A
Log base 10
4
Q
What is natural base
A
Log e
5
Q
Inverse ln
A
Log e
6
Q
Logarithmic function
A
Y= alog (X-h) +k
B
7
Q
How to find parent of log function
A
Y= log base to x
So base^y=x
8
Q
How to graph log function
A
Base^y=x
Plug in y points
Plot them
Translate h and k
9
Q
0<b></b>
A
Down and away from y
10
Q
B>1
A
Up and away from y
11
Q
Log b ^(m*n) =
A
Log b m+ log b n
Add
12
Q
Log b (m/n) =
A
Log b m- log b n
Subtract
13
Q
Log h m^n =
A
N log b m
Distribute
Exponent just goes to front
14
Q
Expand order
A
Quotient
Product
Power
15
Q
Condense order
A
Power
Product
Quotient
16
Q
Fix log b 3/7
A
Log b 3/7
= log b 3- log b 7
17
Q
Change of base formula
A
Log c a =
Log b a/ log b c
