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

Logarithmic and exponential functions — practice question

(main)[3]

Solve the equation $\ln(1 + e^{-3x}) = 2$. State 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: “State that the rearranged equation is $1+e^{-3x}=e^2$” …

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