... ldp 10 , chiing toi tiep tuc bien scan bo sach: Thiet ke bai giang mon Toan ldp 11 . Bg sach gom, 8 cuon: Thiet kebdi gidng Hinh hoc 11 : 2 tap Thiei kebdi gidng Dgi sdvd Gidi tich 11 : 2 ... Dgi sdvd Gidi tich 11 : 2 tap Thiit kebdi gidng Hinh hoc 11 ndng cao: 2 tap Thiit kebdi gidng Dgi sdvd Gidi tich 11 ndng cao: 2 tap Day la b6 sach co nhieu hudng thiet ke, co nhieu ... giam tur 1 ddn -1. ã GV neu nhan xet trong SGK : 1) Khi X thay ddi, ham sd y = cosx nhan mgi gia tri thudc doan [rl; 1] . Ta ndi tap gid tri ciia ham sd y = cosx la doan [ -1; 1] . 2) Do...