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Section 8.5 Logarithmic Functions
829
Version: Fall 2007
8.5
Exercises
In
Exercises 1

18
, ﬁnd the exact value
of the function at the given value
b
.
1.
f
(
x
) = log
3
(
x
);
b
=
5
√
3.
2.
f
(
x
) = log
5
(
x
);
b
= 3125.
3.
f
(
x
) = log
2
(
x
);
b
=
1
16
.
4.
f
(
x
) = log
2
(
x
);
b
= 4.
5.
f
(
x
) = log
5
(
x
);
b
= 5.
6.
f
(
x
) = log
2
(
x
);
b
= 8.
7.
f
(
x
) = log
2
(
x
);
b
= 32.
8.
f
(
x
) = log
4
(
x
);
b
=
1
16
.
9.
f
(
x
) = log
5
(
x
);
b
=
1
3125
.
10.
f
(
x
) = log
5
(
x
);
b
=
1
25
.
11.
f
(
x
) = log
5
(
x
);
b
=
6
√
5.
12.
f
(
x
) = log
3
(
x
);
b
=
3
√
3.
13.
f
(
x
) = log
6
(
x
);
b
=
6
√
6.
14.
f
(
x
) = log
5
(
x
);
b
=
5
√
5.
15.
f
(
x
) = log
2
(
x
);
b
=
6
√
2.
16.
f
(
x
) = log
4
(
x
);
b
=
1
4
.
17.
f
(
x
) = log
3
(
x
);
b
=
1
9
.
18.
f
(
x
) = log
4
(
x
);
b
= 64.
Copyrighted material. See: http://msenux.redwoods.edu/IntAlgText/
1
In
Exercises 19

26
, use a calculator to
evaluate the function at the given value
p
. Round your answer to the nearest
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