Card 1 of 22
Using two points, the gradient of a straight line is [...]\text{[...]}[...].
A
666.
B
The concavity must change across x=ax=ax=a.
C
Using two points, the gradient of a straight line is y2−y1x2−x1\boxed{\frac{y_2-y_1}{x_2-x_1}}x2−x1y2−y1.
D
Below the xxx-axis, since f′(x)<0f'(x)<0f′(x)<0.
Card 1 of 22
1.7.1 Differentiation Flashcards
22 flashcards on WJEC A Level Maths 1.7.1 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.