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If log_10 a = m, express the following in terms of a. 10^m + 2 - Mathematics

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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]

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B Nirmala Shastry Mathematics [English] Class 9 ICSE
Chapter 7 Logarithms
EXERCISE 7A | Q 5. (ii) | Page 72
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