(i)[2]
Solve $|x + 2| = |x - 13|$.
(ii)[2]
Hence solve $|3^y + 2| = |3^y - 13|$, with your answer correct to $3$ significant figures.
Mathematics 9709 · AS & A Level · Logarithmic and exponential functions
Logarithmic and exponential functions — practice question
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Square both sides to produce a linear equation, or solve a linear equation where the signs of $x$ are different” …
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