Date | May 2018 | Marks available | 7 | Reference code | 18M.1.SL.TZ1.S_7 |
Level | Standard Level | Paper | Paper 1 (without calculator) | Time zone | Time zone 1 |
Command term | Find | Question number | S_7 | Adapted from | N/A |
Question
Consider f(x), g(x) and h(x), for x∈ where h(x) = (x).
Given that g(3) = 7 , g′ (3) = 4 and f ′ (7) = −5 , find the gradient of the normal to the curve of h at x = 3.
Markscheme
* This question is from an exam for a previous syllabus, and may contain minor differences in marking or structure.
recognizing the need to find h′ (M1)
recognizing the need to find h′ (3) (seen anywhere) (M1)
evidence of choosing chain rule (M1)
eg
correct working (A1)
eg
(A1)
evidence of taking their negative reciprocal for normal (M1)
eg
gradient of normal is A1 N4
[7 marks]