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What does evaluating f′(x)f'(x)f′(x) at x=ax=ax=a give?
A
The vertical line x=ax=ax=a.
B
The curve's gradient at x=ax=ax=a.
C
At a stationary point, dydx=0\boxed{\frac{dy}{dx}=0}dxdy=0.
D
A local maximum: increasing then decreasing.
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1.7.5 Differentiation Flashcards
22 flashcards on WJEC A Level Maths 1.7.5 Differentiation: the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4.