Notes (a) Use of where is their gradient expression in terms of and / or only for m c t second M1. Accept and attempt to find for second M1. k (b) Correct absolute factors for their constant for second M1. Accept correct use of quadratic formula for second M1. Alternatives: (a) and B1 M1, then as in main scheme. (a) B1 M1, then as in main scheme. (a) and Q8 B1 Assume true for = : n k True for = + 1 if true for = n k n k. B1 True for = 1, n true for all n. M1 A1 A1cso (5) (b) B1, B1 (*) M1 A1 A1cso (5)
Notes (a) Use of where m is their gradient expression in terms of c and / or t only for second M1. Accept and attempt to find k for second M1. (b) Correct absolute factors for their constant for second M1. Accept correct use of quadratic formula for second M1. Alternatives: (a) and B1 M1, then as in main scheme. (a) B1 M1, then as in main scheme. Q8 (a) and Assume true for n = k : True for n = k + 1 if true for n = k. True for n = 1, true for all n. B1 B1 M1 A1 A1cso (5) (b) (*) B1, B1 M1 A1 A1cso (5)
fp1_all-past-papers.docx