C4 June 2008 mark scheme.pdf
C4 June 2008 mark scheme.pdf
C4 June 2008 mark scheme.pdf
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
EDEXCEL CORE MATHEMATICS <strong>C4</strong> (6666) – JUNE <strong>2008</strong>PROVISIONAL MARK SCHEMEQuestionNumberSchemeMarks5 8OB 7 2 4M1 ft3 4Hence,11OB 1 or OB 11i j 11k A111(12 <strong>mark</strong>s)2 2A B7. (a) 24 y (2 y)(2 y) (2 y) (2 y)so 2 (2 ) (2 )A y B y M1Let 2,2 B 4 B , Let 2,1y22 A 4 A M11y2giving1 12 2(2 y) (2 y)A1 cao (3)(b) 2 dy1 dx24 y cot xB11 12 2 d y(2 ) (2 )tan x d xy yln(2 y) ln(2 y) ln(sec x)c B1 M1 A1 ft1 12 2y 0, x3ln 2 ln 2 ln c M11 1 12 2 cos30 ln 2 c c ln 2ln(2 y) ln(2 y) ln(sec x ) ln 21 12 21 2 y sec xln ln2 2 y 2M1ln2 y sec x2ln2 y 2ln2 y sec xln2 y 22M12 y2sec x2 y 4Hence,2 8 4ysec x2 yA1 (8)(11 <strong>mark</strong>s)5
Change language