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Question
If log10 a = m, express the following in terms of a.
10m + 2
Sum
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Solution
Given: log10 a = m
To find: Express 10m + 2 in terms of a.
Calculation:
Step 1: From the given relation:
log10 a = m
⇒ 10m = a
Step 2: Expand 10m + 2:
10m + 2 = 10m × 102
Step 3: Substitute 10m = a:
10m + 2 = a × 102
10m + 2 = 100 a
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Chapter 7: Logarithms - EXERCISE 7A [Page 72]
