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

Logarithmic and exponential functions — practice question

(main)[5]

Solve the equation $\dfrac{e^x + 2e^{-x}}{e^x - 3} = 4$. State your answer to 3 decimal places.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Derive a 3-term quadratic in $e^x$” …

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