ICSE Class 9 Answered
Express as a single logarithm:-
3+1/2 log10 9-2 log10 5
Asked by janhavitopkhane68.9spicertl | 24 Jul, 2020, 07:57: PM
Expert Answer
3 + 1/2 log10 9 - 2 log10 5
= 3 + 1/2 log10 32 - log10 52
= 3 + 1/2 x 2 log10 3 - log10 25
= 3 + log10 3 - log10 25
= 3 + log10 (3/25)
= 3 log10 10 + log10 (3/25)
= log10 103 + log10 75
= log10 (1000 x 3/25)
= log10 1200
Answered by Renu Varma | 25 Jul, 2020, 06:14: PM
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