Mathematics 9709 · AS & A Level · Logarithmic and exponential functions

Logarithmic and exponential functions — practice question

(main)[4]

Use logarithms to solve $3^{x+4} = 5^{2x}$, and give the answer correct to $3$ significant figures.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Take logarithms of both sides and use the power law” …

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