| Exam Board | Edexcel |
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| Module | C34 (Core Mathematics 3 & 4) |
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| Year | 2014 |
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| Session | January |
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| Topic | Product & Quotient Rules |
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1.
$$\mathrm { f } ( x ) = \frac { 2 x } { x ^ { 2 } + 3 } , \quad x \in \mathbb { R }$$
Find the set of values of \(x\) for which \(\mathrm { f } ^ { \prime } ( x ) > 0\)
You must show your working.
(Solutions based entirely on graphical or numerical methods are not acceptable.)