Mathematics · May / June 2022 · Paper 41 · Question 4
0580
As printed in the paper
The question as text
( ) f x x 2 1 = - ( ) g x x 3 2 = - ( ) , h x x x 1 0 ! = ( ) j x 5x =
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
4(a)(i)[1]
3 [1]
4(a)(ii)[1]
7 [1]
FT their (i) − 3×their (i) 2
4(b)[2]
+ x 2 oe final answer 3 [2]
M1 for y + 2 = 3x or y 2 = − x or x = 3y – 2 3 3
4(c)[2]
25 [2]
M1 for 1 = 5− 2 oe x
4(d)[2]
2 − − 2 x x 1 final answer x [2]
M1 for 2x – 1 – 1 x
4(e)[1]
2.98 × 1017 or 2.980... × 1017 [1]
4(f)[2]
625 [2]
M1 for x = j(4)
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