(main)[5]
Solve the equation $|2^x - 7| = 1$, and give answers to $2$ decimal places when needed.
Mathematics 9709 · AS & A Level · Logarithmic and exponential functions
Logarithmic and exponential functions — practice question
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “State, or clearly imply, the non-modular equation $(2^x-7)^2=1$, or the matching pair of equations” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI