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Write the following expression as a single logarithm. 5 log x + 7 log y − log z - Mathematics and Statistics

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Question

Write the following expression as a single logarithm.

5 log x + 7 log y − log z

Sum
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Solution

5 log x + 7 log y – log z

= log (x5) + log (y7) – log z  ...[n log m = log mn]

= log (x5 y7) – log z  ...[log m + log n = log mn]

= `log ((x^5  y^7)/"z")     ...[log "m" - log "n" = log  "m"/"n"]`

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Chapter 6: Functions - Exercise 6.1 [Page 119]
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