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iGCSE (2021 Edition)

6.01 Definition of the logarithm

Interactive practice questions

Rewrite the equation $5^2=25$52=25 in logarithmic form (with the index as the subject of the equation).

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Rewrite the equation $3^x=81$3x=81 in logarithmic form (with the index as the subject of the equation).

Rewrite the equation $3^1=3$31=3 in logarithmic form (with the index as the subject of the equation).

Rewrite the equation $2^0=1$20=1 in logarithmic form (where the index is the subject of the equation).

Outcomes

0606C7.1A

Know simple properties and graphs of the logarithmic function including lnx and graphs of k ln(ax + b) where n, k, a and b are integers.

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