Power Rule Properties of Logarithms - Ch 7 - Houston ISD
[Pages:7]Properties of Logarithms - Ch 7
Apply Properties of Logarithms
4.5 Apply Properties of Logarithms ? Product Property ? Quotient Property ? Power Property ? Inverse Property ? Change of Base Formula
Apply Properties of Logarithms
Product Rule
Apply Properties of Logarithms Any base example
Common Log example
Natural Log example
Apply Properties of Logarithms
Quotient Rule
Apply Properties of Logarithms Any base example
Common Log example
Natural Log example
Apply Properties of Logarithms
Power Rule
1
Apply Properties of Logarithms Any base example
Common Log example
Natural Log example
Apply Properties of Logarithms
Other Rules Part 1
Apply Properties of Logarithms Any base example
Common Log example
Natural Log example
Apply Properties of Logarithms
Other Rules Part 2
Apply Properties of Logarithms Any base example
Common Log example
Natural Log example
Apply Properties of Logarithms
Other Rules Part 3
2
Apply Properties of Logarithms Any base example
Common Log example Natural Log example
Apply Properties of Logarithms
Expanding Expressions Using Logarithmic Rules
Example #1
Apply Properties of Logarithms
Expanding Expressions Using Logarithmic Rules
Example #2
Apply Properties of Logarithms Expanding Expressions Using
Logarithmic Rules
Example #3
Apply Properties of Logarithms
Expanding Expressions Using Logarithmic Rules
Example #4
Apply Properties of Logarithms
Condensing Expressions Using Logarithmic Rules
Example #1
3
Apply Properties of Logarithms
Change of Base Formula
Apply Properties of Logarithms
Apply Properties of Logarithms
4.5 Apply Properties of Logarithms ? Product Property ? Quotient Property ? Power Property ? Inverse Property ? Change of Base Formula
4
Properties of Logarithms 1
Name: ________________________
A2.A.19: Properties of Logarithms 1: Apply the properties of logarithms to rewrite logarithmic expressions in equivalent forms
1 The expression log 12 is equivalent to 1) log6 log 6 2) log3 2log2 3) log3 2log2 4) log3 log4
2 The expression log 4x is equivalent to 1) log x4 2) 4 log x 3) log4 log x 4) (log 4)(logx)
3 Which expression is not equivalent to logb 36? 1) 6 logb 2 2) logb 9 logb 4 3) 2 logb 6 4) logb 72 logb 2
4 If A r2 , log A equals 1) 2log logr 2) log 2 log r 3) 2log 2logr 4) 2 logr
5
If
L
x2 k
,
then
log L
is
equal
to
1)
2
log
x k
2) 2(logx log k)
3) 2log x log k
2log x 4) log k
6
The
expression
log
b3 a
is equivalent to
1) 3(log b loga)
2) log3b loga
3) 3log b loga
3log b 4) loga
7
If u
x y2
, which
expression is equivalent to
log u?
1) logx 2logy
2) 2(logx logy)
3) 2(logx logy)
4) logx 2logy
8 If log x2 log 2a log 3a , then log x expressed in
terms of log a is equivalent to
1)
1 2
log
5a
2)
1 2
log
6
log
a
3) log6 log a
4) log6 2 log a
9 The expression log xy is equivalent to
1) 2log x logy
2) 2(logx logy)
3)
1 2
log
x
log
y
4)
1 2
(log
x
log
y)
1
Regents Exam Questions A2.A.19: Properties of Logarithms 1
Name: ________________________
10 If x (82 )( 5 ), which expression is equivalent to
log x ?
1) 2log 8 2log 5
2)
2(log
8
1 2
log
5)
3)
2
log
8
1 2
log
5
4)
(2
log
8)(
1 3
log 5)
xy 13 The expression log w is equivalent to
2log xy 1) logw
2) logx log y logw
3)
1 2
(log
x
log
y)
log
w
4)
1 2
(log
xy
log
w)
11 If x a c b , then log x is equal to
1)
log a
1 2
log b
log c
2) loga 2log b log c
3)
log a
1 2
log b
log c
4) loga 2log b log c
xy 12 Log z is equal to
1)
1 2
log x
1 2
log y
log z
2)
1 2
log
x
log
y
log
z
3)
1 2
??? log
x
log
y
log
z
^?~
1 2
log
xy
4) log z
14 Log
a b
is equivalent to
1)
1 2
log
a
log
b
2)
1 2
(log
a
log
b)
3)
1 2
(log
a
log
b)
4)
1 2
log
a
log
b
15
The expression log??????????
xn y
^?~~~~~~~~
is equivalent to
1)
n
log
x
1 2
log
y
2) n logx 2logy
3)
log(nx)
log???????
1 2
y
^?~~~~~
4) log(nx) log(2y)
2
Regents Exam Questions A2.A.19: Properties of Logarithms 1
Name: ________________________
16
The
expression
log??????????
x2y3 z
^?~~~~~~~~
is
equivalent
to
(2x)(3y)
1)
1 2
z
2)
2log x
3log y
1 2
log z
3)
log
2x
log
3y
log
1 2
z
4)
2
log
x
3
log
y
1 2
log
z
x2y3 17 The expression log z is equivalent to
1)
1 2
(2
log
x
3
log
y
log
z)
2)
1 2
(2
log
x
3
log
y)
log
z
3) 2log x 3logy log z
x2y3 4) z
19
If r 3
A2B C
,
then
log r
can
be
represented
by
1)
1 6
log A
1 3
log B
log C
2) 3(log A2 log B log C)
3)
1 3
log(A2
B)
C
4)
2 3
log
A
1 3
log
B
1 3
log
C
4 x2y 20 The equation N z is equivalent to
1)
log N
1 4
(2 log x
log y
logz)
2)
log N
1 4
(2 log x
log y)
log z
3)
log N
1 4
log 2x
1 4
log y
logz
4)
log N
2 4
log x
1 4
log(y
z)
3a 18 The expression log b is equivalent to
1)
1 3
log
a
log
b
2)
1 3
log(a
b)
3) 3log a logb
4) 3log(a b)
21
The expression log 4
a2 b
is equivalent to
1)
1 4
??????????
log a 2 log b
^?~~~~~~~~
2) 4(log a 2 log b)
3)
1 2
(4
log
a
log
b)
4)
1 4
(2
log
a
log
b)
22 Log cot A is equivalent to 1) logsinA logcos A 2) logsinA logcos A 3) logcos A logsinA 4) logcos A logsinA
3
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