| Exam Board | OCR |
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| Module | H240/01 (Pure Mathematics) |
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| Year | 2019 |
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| Session | June |
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| Topic | Differentiation from First Principles |
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6 Let \(\mathrm { f } ( x ) = 2 x ^ { 3 } + 3 x\). Use differentiation from first principles to show that \(\mathrm { f } ^ { \prime } ( x ) = 6 x ^ { 2 } + 3\).