True for = + 1 if true for = n k n k. True for = 1, n true for all n. A1 cso [4] Notes Accept or above B1 seen award M1 or award first A1 All three elements stated somewhere in the solution award final A1 (a) (3, 0) Q4 B1 (1) (b) P: B1 and lie on A B B1 or a correct method to find both and PB PS Perimeter = M1 M1 A1 (5) [6]
True for n = k + 1 if true for n = k. True for n = 1, true for all n. A1 cso [4] Notes Accept or above B1 seen award M1 or award first A1 All three elements stated somewhere in the solution award final A1 Q4 (a) (3, 0) B1 (1) (b) P: A and B lie on or a correct method to find both PB and PS Perimeter = B1 B1 M1 M1 A1 (5) [6]
fp1_all-past-papers.docx