Date | November 2019 | Marks available | 2 | Reference code | 19N.2.SL.TZ0.S_3 |
Level | Standard Level | Paper | Paper 2 | Time zone | Time zone 0 |
Command term | Find | Question number | S_3 | Adapted from | N/A |
Question
Let , and .
Find .
[2]
a.
Let be a point on the graph of . The tangent to the graph of at is parallel to the graph of .
Find the -coordinate of .
[5]
b.
Markscheme
attempt to form composite (in any order) (M1)
eg ,
A1 N2
[2 marks]
a.
recognizing that the gradient of the tangent is the derivative (M1)
eg
correct derivative (seen anywhere) (A1)
correct value for gradient of (seen anywhere) (A1)
,
setting their derivative equal to (M1)
(exact), A1 N3
[5 marks]
b.
Examiners report
[N/A]
a.
[N/A]
b.