5/4X5/4X1/4X1/4X4/5X4/5X4X4的答案（简便运算）急!

x1-x2+x3=1 x2-x3+x4=2 x3-x4+x5=3 x4-x5+x1=4 x5-x1+x2=5 求x1,x2,x3,x4,x5 x1-x2+x3=1x2-x3+x4=21若x1,x2,x3,x4,x5满足方程组 x3-x4+x5=3x4-x5+x1=4x5-x1+x2=5求x2 x3 x4的值2已知 x1+x4+x6+x7=39 x2+x4+x5+x7=49 x3+x5+x6+x7=41 x4+x7=13 x5+x7=14 x6+x7=9 x1+x2+x3+x4+x5+x6+x7=9求x7的值若x1,x2,x3,x4,x5满足方程组 x1-x 求非齐次线性方程组的通解x1+3x2+5x3-4x4=1x1+3x2+2x3-2x4+x5=-1x1-2x2+x3-x4-x5=3x1+2x2+x3-x4-x5=3 解方程组:x1+x2+x3+x4+x5=7 3x1+2x2+x3+x4-3x5=－2 x2+2x3+2x4+6x5=23 5x1+4x2-3x3+3x4-x5=10 5/4X5/4X1/4X1/4X4/5X4/5X4X4的答案（简便运算）急! 设总体X~N(12,4),有n=5的样本X1,X2,X3,X4,X5,求P{min（X1,X2…,X5) 求下列非齐次线性方程组的通解(1)｛x1+x2+x3+x4+x5=2；x1+2x2-4x5=-2；x1+2x3+2x4+6x5=6；4x1+5x2+3x3+3x4-x5=4｝(2)｛x1-x2+5x3-x4=1；x1+x2-2x3+3x4=1；2x1+3x3+2x4=2；2x1+4x2-11x3+10x4=2｝(3)｛x1+x2+x3+x4+x5=1；3x1+2x2+x3+x4-3x5=0 求方程组x1+3x2+x3+2x4+4x5=3 2x1-x2+8x3+7x4+2x5=9 4x1+5x2+6x3+11x4+10x5=15的全部解线性代数 求解奇次线性方程组{上面2x1+x2+3x3+5x4-5x5 =0 中x1+x2+x3+4x4-3x5=0 下面3x1+x2+5x3+6x4-7x5=0 请问方程组x1+x2-3x4-x5=0,x1-x2+2x3-x4+x5=0,4x1-2x2+6x3-5x4+x5=0的基础解系与通解怎么求 关于非齐次线性方程组的,大X1+X2+X3+X4+X5=73X1+2X2+X3+X4-3X5=-2括X2+2X3+2X4-3X5=23号5X1+4X2-3X3+3X4-X5=12X是x不是乘号哦 求线性方程组的全部解,并用对应导出组的基础解系表示X1+3X2+5X3-4X4=1 X1+3X2+2X3-2X4+X5=-1 X1-2X2+X3-X4-X5=3 X1-4X2+X3+X4-X5=3 X1+2X2+X3-X4+X5=-1 x1 + x2 + x3 + x4 + x5 = 7 4x1 + 2x2 + 3x3 + 2x4 - 2x5 = 5 x1 + 3x2 + 2x3 + 3x4 + 7x5 = 30求这方程组的通解 并指出它的一个特解x1 + x2 + x3 + x4 + x5 = 7 4x1 + 2x2 + 3x3 + 2x4 - 2x5 = 5 x1 + 3x2 + 2x3 + 3x4 + 7x5 = 30 帮我用lingo或者lindo算个题呗?x1+x4+x5+x6+x7>20x1+x2+x5+x6+x7>13x1+x2+x3+x6+x7>10x1+x2+x3+x4+x7>12x1+x2+x3+x4+x5+>16x2+x3+x4+x5+x6+>18x3+x4+x5+x6+x7>20格式不对也改下哈,>在lingo中应该和>=一样吧?min=(5x1+4x2+3x3+3x4+3x5+3x6+4x7) 求非其次线性方程组 {x1+2x2+x3+x4+x5=1x1+2x2+x3+x4+x5=12x1+4x2+3x3+x4+x5=2-x1-2x2+x3+3x4-x5=5 2x3+4x4-2x5=6 的一般解 若x1,x2,x3,x4,x5满足方程组：x1-x2+x3=1 x2-x3+x4=2 x3-x4+x5=3 x4-x5+x1=4 x5-x1+x2=5 求x2,x3,x4的少打了个字，是求x2，x3，x4的值 matlab线性方程组计算X1+X2-5X3-X4+X5=98X1+5X2-X3+4X5=23X1-7X2-5X3-X4+X5=42X1+X2+8X3+3X4-X5=-86X2+2X3+7X4-2X5=15 分解因式：-27x3+8 ,(x2-5x+2)(x2-5x+4)-24 ,x5+x4+x3+x2+x1+1