Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 2 (P2-9709/02) | Year 2010 | May-Jun | (P2-9709/23) | Q#1

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Question

Given that 13x = (2.8)y, use logarithms to show that y = kx and find the value of k correct to 3  significant figures.

Solution

We are given;

Taking natural logarithm of both sides;

Power Rule;

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