Report copyright - i.vndoc.comi.vndoc.com/data/file/2015/Thang01/21/de-toan-dh-sp-hn-lan-5-2015.pdf · trong ctó XA, XB là nghiêm Clia pt kx-+ 2k,x -I- k' + I = 0 Nên k' \ -l- Suy ra kg — -l-
Please pass captcha verification before submit form
Please pass captcha verification before submit form