Eric Nicholas K's answer to idununderstandasinglething's Secondary 4 A Maths Singapore question.
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For log 27 3, we use a change of base to base 2 to simply this expression. Or, if you can recognise that 3 is the cube root of 27, you can convert the 3 to the cube root of 27 before evaluating this logarithm to 1/3.
We then convert each log into index form from the outermost log to the innermost log if there are several logs arranged in a row.
We then convert each log into index form from the outermost log to the innermost log if there are several logs arranged in a row.
Date Posted:
4 years ago
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