求解方程组: 2x1 - 3x2 + x3 + 2x4 = 8; x1 + 3x2 +x4 = 6; x1 - x2 + x3 + 8x4 = 7; 7x1 + x2 - 2x3 + 2x4 = 5.
求解方程组: 2x1 - 3x2 + x3 + 2x4 = 8; x1 + 3x2 +x4 = 6; x1 - x2 + x3 + 8x4 = 7; 7x1 + x2 - 2x3 + 2x4 = 5.
发布时间:2024-12-27 16:07:13
求解方程组: 2x1 - 3x2 + x3 + 2x4 = 8; x1 + 3x2 +x4 = 6; x1 - x2 + x3 + 8x4 = 7; 7x1 + x2 - 2x3 + 2x4 = 5.