... 2C D - -0,257a(1,0)Tớnhtng:2 1 2 2 2 3 2 2012 2012 2012 2012 2012 1 2 3 2012S C C C C = + + + + L ( ) ( )2 2012 2012 2012 20121 1 1 1, 2, ,2012 k k k kk C k k C k k C kC k ộ ự = - + ... tam giácABCCõuVIIB:(1,0im):Tớnhtng:0 1 2 2012 2012 2012 2012 2012 1 2 3 2013 C C C CT = + + + + LHT Ghichỳ: Thớsinhkhụngcsdngbtctiliugỡ!Cỏnbcoithikhụn ggiithớchgỡthờm!Cm nthyNguynDuyLiờn(lientoancvp@vinhphuc.edu.vn)gitihttp://www.laisac.page.tl/chớnhthc(thigm01trang)TRNGTHPTCHUYấNVNHPHCPN ... nthyNguynDuyLiờn(lientoancvp@vinhphuc.edu.vn)gitihttp://www.laisac.page.tl/chớnhthc(thigm01trang)TRNGTHPTCHUYấNVNHPHCPN THITHIHCNM20122013LN1MễNTONKHIA(ỏpỏngm5trang)Cõu Nidungtrỡnhby imI(2,0) 1.(1,50im)Khi1m =hms(1)cúdng33 2y x x = - +a)Tpxỏcnh D = Ăb)Sbinthiờn+)Chiubinthiờn:2'...