(a) 1. not required. dM1 A1 At cso [5] (b) So, m(N) = M1 N: M1 N: A1 [3] (8 marks) 2. (a) M1 A1 A1 [3] (b) M1 A1 A1 isw Ignore [3] working (6 marks) 3. (a) B1 or M1 A1ft A1; A1 [5] Can be implied by later (b) M1 work even in part (c). terms: x giving, A1
1. (a) not required. At dM1 A1 cso [5] (b) So, m(N) = M1 N: M1 N: A1 [3] (8 marks) 2. (a) M1 A1 A1 [3] (b) M1 A1 A1 isw Ignore working [3] (6 marks) 3. (a) or B1 M1 A1ft A1; A1 [5] (b) Can be implied by later work even in part (c). M1 x terms: giving, A1