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

Logarithmic and exponential functions — practice question

(main)[3]

Solve the equation $\frac{3^x + 2}{3^x - 2} = 8$, and give your answer correct to 3 decimal places.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Make $3^x$ the subject and obtain $3^x=\frac{18}{7}$” …

Full mark scheme, point by point
Step-by-step worked solution
Write your answer & get it marked instantly by AI