Mathematics · Oct / Nov 2025 · Paper 42 · Question 18
0580
As printed in the paper
The question as text
C Ñ A O a b NOT TO SCALE In the diagram, OA is parallel to CÑ. OA å CÑ ¤ 4 å 3 OA a ¤ and OÉ b ¤ .
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
18(a)[1]
b – a [1]
18(b)[3]
11 1 − + b oe simplified a 8 2 final answer [3]
B2 for a correct unsimplified vector for AM seen 1 3 or for = − a oe soi OM b 2 8 3 = −
or B1 for OC b a oe soi 4 or for a correct vector route for AM along lines on the diagram
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.