Cao đẳng - Đại học
... khiλ = 21 2 .Tac´oA = 12 21 2 33 −1 21 2 2 21 3àh1ì 2 h1h 2 ì 2 h 2 24 21 6 6 2 214 21 3àh 2 3h1 h 2 h3 h1 h3 24 21 6 0 ... 5x5=4..(DS. x1=1,x 2 = −1, x3 =2, x4= 2, x5=0)14.x1+ x 2 +4x3+ x4− x5 =2, x1− 2x 2 − 2x3+3x5=0,4x 2 +3x3− 2x4+2x5 =2, 2x1−x3+3x4− 2x5= 2, 3x1+2x 2 − 5x4+3x5=3..(DS. ... x1=1,x 2 =2, x3= 2) 29 .2x1+3x 2 +4x3+3x4=0,4x1+6x 2 +9x3+8x4= −3,6x1+9x 2 +9x3+4x4=8.(DS. x1=7 2 −3x 2 2, x3= −1, x4= −1, x 2 t`uy ´y)30.3x1+3x 2 − 6x3−...