Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Related questions
Question
Solve each exponential equation. Give the exact value for x.
(a)
x =
(b)
x =
(c)
x =
(d)
x =
7x =
| 1 |
| 49 |
x =
(b)
5x = 8
x =
(c)
4x = 2.5
x =
(d)
4x = 5
x =
Expert Solution
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Step 1
a) given: 7x = 1
Take log both side, we get:
7logx=log1
So x=0 (log1=0)
Then
Answer: 49x=0
Step by stepSolved in 4 steps
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