(2) (b) Reflection; B1; Reflection; in the line = B1 y –x (2) (c) is a constant. k C is singular (Can be implied) B1 Applies M1 A1 (3) 9 Question Scheme Notes Marks Number 4. (a) At least two of the four terms M1 differentiated correctly. Correct differentiation. (Allow any A1 correct unsimplified form) (2) A correct numerical expression for (b) B1 f(0.8) Attempt to insert = 0.8 into their x Does not require an f’(x). evaluation. M1 (If is incorrect for their derivative and there is no working score M0) Correct application of using their values. Does M1 not require an evaluation. A1 cao 0.869 (4) 6
(2) (b) Reflection; in the line Reflection; B1; y = –x B1 (2) (c) k is a constant. C is singular (Can be implied) B1 Applies M1 A1 (3) 9 Question Number Scheme Notes Marks 4. (a) At least two of the four terms differentiated correctly. M1 Correct differentiation. (Allow any correct unsimplified form) A1 (2) (b) A correct numerical expression for f(0.8) B1 Attempt to insert x = 0.8 into their f’(x). Does not require an evaluation. (If is incorrect for their derivative and there is no working score M0) M1 Correct application of using their values. Does not require an evaluation. M1 0.869 A1 cao (4) 6
fp1_all-past-papers.docx