Cho hệ các vector U = − − + − {(1,2, ); (2,3, 1);(1,0,2 n n n (0, 1,1 ); ) n } . a. Tìm số chiều và một cơ sở W của không gian con sinh bởi hệ vector U . b. Tìm tham số k để 2 u k = + (2,3, 1) là một tổ hợp tuyến tính của W , và suy ra [ ]W u .

Northern was a learned a fairly cold climate caused by see one from the atlantic ocean, but se was real and tends to be much warmer, sonia look good causes difference. a.cool wins cannot blow across a leg into the south mountains, b.prevent cold air from blowing over into south sea,c.the south is at much higher elevation, so it is closer to the sun, d.suppose early and has a sperience a drastic climate change in the past few years.