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Show all necessary working and solve the equation $3|2^x - 1| = 2^x$, giving answers accurate 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: “State or imply a non-modular equation such as $3^2(2^x-1)^2=(2^x)^2$ or an equivalent pair of equations $3(2^x-1)=\f2^x$” …
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