Easy -1.2 This is a straightforward application of the power rule for integration with no additional complexity. It requires only direct recall of the integration formula and basic arithmetic with powers, making it easier than a typical A-level question which would involve multiple techniques or problem-solving.
Question 1:
1 | 1
1 x6 4x2 c
2 | 4 | 1
B1 for 1 x6, M1 for kx2 , A1 for k = 4
2
or , B1 for + c dependent on at least
one power increased | allow x6 isw,