Mathematics · Oct / Nov 2022 · Paper 41 · Question 10
0580
As printed in the paper
Show the answer and mark scheme
10(a)(i)[1]
4 or 5 or 7 or 8 or 9 [1]
10(a)(ii)[2]
[a =] 3, [b =] 10 [2]
B1 for each or for a and b transposed
10(b)[5]
5 − 4 6 x 30 x their derivative = 0. (0, 0) and (5, –3125) [7]
B2 B1 for 5 − 4 6x or 30 x
M1 B2 B1 for (5, –3125) or for x = 0 and x = 5
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