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Logarithms — MATHEMATICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9MATHEMATICSLogarithms2 Marks
Question
Express the following in logarithmic form $: (81)^{\frac{3}{4}}=27$
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Answer

$(81)^{\frac{3}{4}}=27$
$\Rightarrow \log _{81} 27=\frac{3}{4} \quad \ldots .\left[\right.$ By definition of logarithm, $a^b=c \Rightarrow \log _a c= b ]$

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