day 42: november 5 th objective: apply strategies for finding inverses to parent graph equations....
TRANSCRIPT
Day 42: November 5th
Objective: Apply strategies for finding inverses to parent graph equations. Begin to think of the inverse function for y=3x. THEN Define the term logarithm as the inverse exponential function or, when y=bx, “y is the exponent to use with base b to get x.”
• Homework Check• 6-54 to 6-58 (pgs 277-279)• Wells Time• 6-67 to 6-71 (pgs 281-282)• ClosureHomework: 6-59 to 6-66 (pgs 279-280) AND 6-72 to
6-80 (pgs 283-284) Project Due: Monday, November 8th
Silent Board Game
x g x
x g x
83
32
5
1
2
110
16
442
31.6
64
6
21
0
0.25
21
2
1
2
0.2
~ 2.3
1
8
3 g x 2log x
Silent Board Game
x g x
x g x
83
32
5
1
2
110
16
442
31.6
64
621
0
0.25
21
2
1
2
0.2
~ 2.3
1
8
3
g x 2log x
6-71: Closure
7
3
75
1.210
32
log 49
log 81
log 5
log 10
log 2w
2
4
7
1.2
w + 3
Logarithm's Undo Exponentials
Log’s give you exponents!
2xy 2yx Inverses
2logy xSame as
Logarithm and Exponential Forms
y = log2(32)
2y = 32
Logarithms
This is the general form:
log
x
a
a b
b x
The logarithm base a of b is the exponent you put on a to get b.
i.e. Logs give you exponents!
a > 0
b > 0