... TNH s 5 THI TH I HC V CAO NG NM 2010 Mụn thi: TON Thi gian: 180 phỳt (khụng k thi gian phỏt ) I. PHN CHUNG (7 im) Cõu I (2 im): Cho hm s yxmxmx322(3)4=++++ (Cm). 1) Kho sỏt s bin thi n v ... xxxsin0cos0cot1ỡạùạớùạợ. PT x2cos2= xk24pp=-+ . Cõu III: A = xxxxxx20cossintanlimsinđ- = xxxxxx220(cos1)sinlimsin.cosđ- = xxxx220sinlim1cosđ-=- Cõu IV: AÂMCN l hỡnh thoi ị MN ^ AÂC, DBÂMN cõn ti BÂ ... P l trung im ca CD ị NP ^ (ABCD). MCNaS264D= , MCPaS24D= ị MCPMCNSS6cos6DDj==. Cõu V: ã T gi thit ị xyzyzxzxy1++= v xyzxyzxyyzzx222=++++ ị xyz1111++Ê. ã Chỳ ý: Vi a, b > 0, ta cú: abab411Ê++...