Log 9 - Log 3 + Log 4 =
- Log 10
- Log 12
- Log 16
Explanation from PART66Online
Apply the log rules: Log 9 - Log 3 = Log(9/3) = Log 3, then Log 3 + Log 4 = Log(3 x 4) = Log 12.
M
Mukesh Kumar asked · 19 May 2012
How it is Log12 as 9-3+4=10
Community Comments (2)
P
PART66Online
21 May 2012
T
tsukiyo92
15 Jul 2014
When multiple 'individual' log is add/subtract, they can be convert into single log with multiplication/division.
Above example:
Log 9 - Log 3 + Log 4 (3 individual log)
Convert: Log (9 / 3 * 4) [minus->divide, plus->multiply]
= Log (3 * 4) = Log 12
Above example:
Log 9 - Log 3 + Log 4 (3 individual log)
Convert: Log (9 / 3 * 4) [minus->divide, plus->multiply]
= Log (3 * 4) = Log 12
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