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Log Properties

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.
a)
A
b)
B
c)
C
d)
D
2.
a)
A
b)
B
c)
C
d)
D
3.
When a logarithm has division inside of it, it expands using ________________.
a)
Addition
b)
Subtraction
c)
Multiplication
d)
Division
4.
Condense
a)
A
b)
B
c)
C
d)
D
5.
Condense
a)
A
b)
B
c)
C
d)
D
6.
Expand.
a)
A
b)
B
c)
C
d)
D
7.
log381 = 
a)
2
b)
3
c)
4
d)
5
8.
Solve: log (x) + log (x) = log (25)
a)
-5, 5
b)
5
c)
-5
d)
25
9.
Rewrite 34 = 81 in logarithmic form.
a)
log34 = 81
b)
log813 = 4
c)
log381 = 4
d)
log481 = 3
10.
Write as a single log: log 12 + 2 log x
a)
log (12 + 2x)
b)
log (14x)
c)
log (12 * 2x)
d)
log (12x2)
11.
Write logb(xy) as two logs
a)
logbx+logby
b)
logbx-logby
c)
logbx*logby
d)
logbx/logby
12.
Write logb(x/y) as two logs
a)
logbx-logby
b)
logbx+logby
c)
logbx*logby
d)
logbx/logby
13.
Rewrite logb(xn)
a)
nlogbx
b)
(logbx)n
c)
xnlogbx
d)
logb(xn)
14.
Expand
a)
A
b)
B
c)
C
d)
D
15.

Use the change of base property  logb(x) = loga(x)loga(b) \log_b\left(x\right)\ =\ \frac{\log_a\left(x\right)}{\log_a\left(b\right)}\   
to write  log2(16) \log_2\left(16\right)\   with the common base

a)

 log(8)\log\left(8\right) 

b)

 log(16)log(2)\frac{\log\left(16\right)}{\log\left(2\right)} 

c)

 log(2)log(16)\frac{\log\left(2\right)}{\log\left(16\right)} 

d)

 log(16) + log(2) \log\left(16\right)\ +\ \log\left(2\right)\