... TRNGTHPTCHUYấNVNHPHC KTHITHIHCLN1NMHC201 22013 Mụn:Toỏn12.Khi A. Thigianlmbi:150phỳt(Khụngkthigiangiao) A. PHNCHUNGCHOTTCTHSINH(8,0im)Cõu I(2,5im)Chohms:33 2y x mx = - + ( )1 , m là tham số ... N.KhiúAKMNlthitdincndng.0,25t1 1 1 11 . . 2 . 1A BCMK A DCMN ABCD A B C DV V V V V V = + ị = - .Tacú:1 112 2OI AODN BK OI CMCM AC = = ị = = = =0,25Hỡnhchúp .A BCMKcúchiucaol 3A ... -CõuIV.(1,0im)Chohỡnhlpphng1 1 1 1.ABCD A B C D códicnhbng3vim Mthuccnh1CC saocho2CM =.Mtphng ( ) a iqua ,A M vsongsomgvi BD chiakhilpphngthnhhaikhiadin.Tớnhthtớchhaikhiadinú.CõuV.(1,0im)Chocỏcsthc...