解二元、三元,四元一次方程组.xls

文档介绍：矩阵解方程组说明:只要输入红色数字可得方程组的解a1x1+b1x2+c1x3=d11x1+-1x2+2x3=1a2x1+b2x2+c2x3=d21x1+-2x2+0x3=2a3x1+b3x2+c3x3=d33x1+-1x2+5x3=3D=a2b2c2x1=D1X=A-1Ba3b3c3Dd1b1c1x2=D2D1=d2b2c2DA的矩阵→A的逆阵×B的矩阵=X的解d3b3c31-12--20-1-=D33-151--=a2d2c2Da3d3c38x1+10x2+5x3+9x4=8508x1+6x2+13x3+6x4=780a1b1d12x1+4x2+0x3+4x4=280D3=a2b2d22x1+0x2+2x3+1x4=90a3b3d3系数矩阵→系数矩阵的逆阵×常数=----------1/5--2/5方程解20502010矩阵解方程组说明:只要输入红色数字可得方程组的解a1x1+b1x2+c1x3=d11x1+-1x2+2x3=1a2x1+b2x2+c2x3=d21x1+-2x2+0x3=2a3x1+b3x2+c3x3=d33x1+-1x2+5x3=3D=a2b2c2x1=D1X=A-1Ba3b3c3Dd1b1c1x2=D2D1=d2b2c2DA的矩阵→A的逆阵×B的矩阵=X的解小数d3b3c31-12--20-1--=D33-151---=a2d2c2Da3d3c38x1+10x2+5x3+9x4=8508x1+6x2+13x3+6x4=780a1b1d12x1