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# ISC MATHEMATICS PRELIM PAPER 1 2018

4 pages, 51 questions, 10 questions with responses, 14 total responses,    0    0
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S EC T O N A (8 0 M a rks ) E l1 0 2 " 20 M a rk s . a lu a te ] Sh . - is Th a t th e fu c o n t 1 . o u s n c bu t Rx ) tio n d iH n o t \ = 3 x t ia . re n b e \, x e a t x - 3 14 1 S o lv (1 e ' , ' (ta n co s x s in = tr ix A a (1 + , t c o 2 x )d y co s " ) + L: ] - . If l is o 2 + in v e r t ib th a t A so an 3x f = A x l, Sh o x R th a t a = fin d @ d a{ G iv A ) (t a L an (i) . n c tio n lin d th e in , d B u R is b e b in a (a b ) (c d ) , co m , m u e le m i) s in + d an a n a ry o = (a ta tiv e a n d fo r en t d y ' ta n x co s - - a ' (1 + U s in g p r o p e r t ie s p e r a tio n c, b + d) a s s o c ia tiv f d e te r m in a n b , p ro v e th a t e A on co s t), rr v en ts A P , P (A P (B ) = a o [H in h M th e u ltip ly fu d e te rm in s t c o lu m tby an a n by a an l d d iv id e 41 = lly an d B u B)= a re s u c h 3 5 th a t F in d P if .. e s H y - O a re h : "a t v er se Q , ' 14 t th e 1 m d y Sho e fu 14 1 S 4 . tt = 2 A an Z 2 F in d th e id e n tity If x 1 5 0 5 - w Fin d - W - A d , e fi n ed by on 2 y )d x co s l0 g (x + x 2 ) + m d dx 2 ) p ro v , + x & dx . 0 e th a t 14 ] e x c lu s iv e (it) in d e p e n d e n t Scanned by CamScanner

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