Skip to content

Course home

Sign up

Card 1 of 20

Why must hhh not be set equal to zero in the difference quotient?

A

π180\dfrac{\pi}{180}180π​

B

The cosine angle-addition identity is cos⁡(x+h)=cos⁡xcos⁡h−sin⁡xsin⁡h\boxed{\cos(x+h)=\cos x\cos h-\sin x\sin h}cos(x+h)=cosxcosh−sinxsinh​.

C

It would cause division by zero.

D

−sin⁡x-\sin x−sinx

Card 1 of 20

1.7.8 Differentiation from first principles for sin x and cos x (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /1.7.8 Differentiation from first principles for sin x and cos x (A-level only)

20 flashcards on OCR A Level Maths 1.7.8 Differentiation from first principles for sin x and cos x (A-level only): the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3.

Flashcards