Finds A1 Uses the equation of a straight line in the form or o.e. M1 Shows or implies that a maximum value will occur when M1 Solves the equation for stating A1 r, Attempts to substitute for in , for example writing M1 r Solves for stating A1 A, (6 marks) Total 11 marks NOTES: 12b: Ignore any attempts at deriving second derivative and related calculations.
Finds A1 Shows or implies that a maximum value will occur when M1 Solves the equation for r, stating A1 Attempts to substitute for r in , for example writing M1 Solves for A, stating A1 (6 marks) Total 11 marks NOTES: 12b: Ignore any attempts at deriving second derivative and related calculations. Uses the equation of a straight line in the form or o.e. M1
19729_06_as_pure_mathematics_practice_paper_c_mark_scheme.docx