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Easy: Exponential to logarithmic
A logarithm is an exponent: log_b x = y means b^y = x. The base stays the base, the logarithm's value becomes the exponent, and the number inside the log becomes the result of the power. The natural log ln x is the logarithm with base e.
Rewrite each equation in the other form.
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log_b(x) = y means bʸ = x: the base stays the base and the log's answer is the exponent. log₂ 8 = 3 because 2³ = 8.
5⁻² = 1/25 becomes log₅(1/25) = −2. Logarithms can be negative; the number inside the log can't.
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