Math wizz needed: How do I express this as a single logarithm: log(base of a)15 - log(base of a)3=?

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Math wizz needed: How do I express this as a single logarithm: log(base of a)15 - log(base of a)3=?

2006-11-16 03:41:03 · 3 answers · asked by knowledge2u4usa 1 in Science & Mathematics ➔ Mathematics

3 answers

Adding logs is the same as taking the log of the two numbers multiplied.
Subtracting the logs is the same as taking the log of the ratio (left number divided by the right number).
log (a) 15 - the log (a) 3 = log (a) 15/3 = log (a) 5.

2006-11-16 03:47:14 · answer #1 · answered by a simple man 6 · 0⤊ 0⤋

its log(base of a)15/3
=
log(base of a)5

2006-11-16 03:47:33 · answer #2 · answered by sriraam h 2 · 0⤊ 0⤋

log(a)15/3

2006-11-16 03:46:37 · answer #3 · answered by veryintrigued 2 · 1⤊ 0⤋