M1 (c) So, A1 cao (2) M1;A1 (d) cao (2) [12] 7. At least one of or B1 correct. (a) , Both and are B1 correct. Applies their divided M1; by their A1 At , cao cso (4) (b) M1 A1 * cso or B1 (3) For or B1 (c) Ignore limits and . Can be implied. Either or oe M1 oe A1 Substitutes limits of 125 and 27 into an integrated function and dM1 subtracts the correct way round. or or A1 (5)
(c) M1 So, A1 cao (2) (d) M1;A1 cao (2) [12] 7. (a) , At least one of or correct. B1 Both and are correct. B1 At , Applies their divided by their M1; A1 cao cso (4) (b) M1 A1 * cso or B1 (3) (c) For or Ignore limits and . Can be implied. B1 Either or oe M1 oe A1 Substitutes limits of 125 and 27 into an integrated function and subtracts the correct way round. dM1 or or A1 (5)