OCR MEI C2 2013 January — Question 6

Exam BoardOCR MEI
ModuleC2 (Core Mathematics 2)
Year2013
SessionJanuary
TopicDifferentiation Applications
TypeIncreasing/decreasing intervals
6 Differentiate \(2 x ^ { 3 } + 9 x ^ { 2 } - 24 x\). Hence find the set of values of \(x\) for which the function \(\mathrm { f } ( x ) = 2 x ^ { 3 } + 9 x ^ { 2 } - 24 x\) is increasing.
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