# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2015 | Oct-Nov | (P1-9709/11) | Q#2

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**Question**

The function f is such that and . Find .

**Solution**

i.

We are given that;

We are also given that .

We are required to find the equation of the curve.

We can find equation of the curve from its derivative through integration;

For the given case;

Rule for integration of is:

Rule for integration of is:

Rule for integration of is:

If a point lies on the curve , we can find out value of . We substitute values of and in the equation obtained from integration of the derivative of the curve i.e. .

We are also given that .

Therefore;

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