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找到五个三元线性方程(1)y = 2x

发布时间:2019/11/09 点击量:
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1,y = 2x-75x + 3y + 2z = 23x-4z = 4,11x + 2z = 233x-4z = 4 * 2 + 25x = 50x = 2。
(再次替换)4x + 6z = 9 * 6- * 522x =替换 - 如果3y = 1 + 2z,x = 2y = -3z = 1 / 22,4x + 9y = 123y-2z = 17x + 5z =19/433 / 2x =?3/4。
(备选)x =?3 / 4y = 5 / 3z = 23,4x?9z = 173x + y + 5z = 18x + 2y + 3z = 2?4 *?8y?21z = 9?3 *?5y?12年
x = 425/73,y = - (216/73),z = 51 / 734,2x + 4y + 3z = 93x?2y + 5z = 115x?6y + 7z = 13死数x =?1,= 1 /2,z = 35,x:y = 3:2 = 15:10 y:z = 5:4 = 10:8 x:y:z = 15:10:8 x = 15 k,y ?? = 10 k,z= 8k×15k + 10k + 8k = 66k = 2x = 30,y = 20,z = 16


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