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Use logarithms to show that $5^{8y} = 6^{7x}$ may be written in the form $y = kx$. State the value of the constant $k$ 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 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Carry out logarithms correctly and use the power law at least once” …
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