有限数学 示例

求解矩阵方程 [[x,-42,-14],[-27,z,18],[10,8,65]]-2[[-9,4,3],[9,10,4],[-9,y,10]]=-5[[2,10,4],[9,8,-2],[w,-4,-9]]
[x-42-14-27z1810865]-2[-9439104-9y10]=-5[210498-2w-4-9]x421427z1810865294391049y10=52104982w49
解题步骤 1
化简每一项。
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解题步骤 1.1
-22 乘以矩阵中的每一个元素。
[x-42-14-27z1810865]+[-2-9-24-23-29-210-24-2-9-2y-210]=-5[210498-2w-4-9]x421427z1810865+2924232921024292y210=52104982w49
解题步骤 1.2
化简矩阵中的每一个元素。
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解题步骤 1.2.1
-22 乘以 -99
[x-42-14-27z1810865]+[18-24-23-29-210-24-2-9-2y-210]=-5[210498-2w-4-9]x421427z1810865+1824232921024292y210=52104982w49
解题步骤 1.2.2
-22 乘以 44
[x-42-14-27z1810865]+[18-8-23-29-210-24-2-9-2y-210]=-5[210498-2w-4-9]x421427z1810865+188232921024292y210=52104982w49
解题步骤 1.2.3
-22 乘以 33
[x-42-14-27z1810865]+[18-8-6-29-210-24-2-9-2y-210]=-5[210498-2w-4-9]x421427z1810865+18862921024292y210=52104982w49
解题步骤 1.2.4
-22 乘以 99
[x-42-14-27z1810865]+[18-8-6-18-210-24-2-9-2y-210]=-5[210498-2w-4-9]x421427z1810865+18861821024292y210=52104982w49
解题步骤 1.2.5
-22 乘以 1010
[x-42-14-27z1810865]+[18-8-6-18-20-24-2-9-2y-210]=-5[210498-2w-4-9]x421427z1810865+1886182024292y210=52104982w49
解题步骤 1.2.6
-22 乘以 44
[x-42-14-27z1810865]+[18-8-6-18-20-8-2-9-2y-210]=-5[210498-2w-4-9]x421427z1810865+188618208292y210=52104982w49
解题步骤 1.2.7
-22 乘以 -99
[x-42-14-27z1810865]+[18-8-6-18-20-818-2y-210]=-5[210498-2w-4-9]x421427z1810865+188618208182y210=52104982w49
解题步骤 1.2.8
-22 乘以 1010
[x-42-14-27z1810865]+[18-8-6-18-20-818-2y-20]=-5[210498-2w-4-9]x421427z1810865+188618208182y20=52104982w49
[x-42-14-27z1810865]+[18-8-6-18-20-818-2y-20]=-5[210498-2w-4-9]x421427z1810865+188618208182y20=52104982w49
[x-42-14-27z1810865]+[18-8-6-18-20-818-2y-20]=-5[210498-2w-4-9]x421427z1810865+188618208182y20=52104982w49
解题步骤 2
加上相应元素。
[x+18-42-8-14-6-27-18z-2018-810+188-2y65-20]=-5[210498-2w-4-9]x+184281462718z2018810+1882y6520=52104982w49
解题步骤 3
Simplify each element.
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解题步骤 3.1
-4242 中减去 88
[x+18-50-14-6-27-18z-2018-810+188-2y65-20]=-5[210498-2w-4-9]x+18501462718z2018810+1882y6520=52104982w49
解题步骤 3.2
-1414 中减去 66
[x+18-50-20-27-18z-2018-810+188-2y65-20]=-5[210498-2w-4-9]x+1850202718z2018810+1882y6520=52104982w49
解题步骤 3.3
-2727 中减去 1818
[x+18-50-20-45z-2018-810+188-2y65-20]=-5[210498-2w-4-9]x+18502045z2018810+1882y6520=52104982w49
解题步骤 3.4
1818 中减去 88
[x+18-50-20-45z-201010+188-2y65-20]=-5[210498-2w-4-9]x+18502045z201010+1882y6520=52104982w49
解题步骤 3.5
1018 相加。
[x+18-50-20-45z-2010288-2y65-20]=-5[210498-2w-4-9]
解题步骤 3.6
65 中减去 20
[x+18-50-20-45z-2010288-2y45]=-5[210498-2w-4-9]
[x+18-50-20-45z-2010288-2y45]=-5[210498-2w-4-9]
解题步骤 4
-5 乘以矩阵中的每一个元素。
[x+18-50-20-45z-2010288-2y45]=[-52-510-54-59-58-5-2-5w-5-4-5-9]
解题步骤 5
化简矩阵中的每一个元素。
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解题步骤 5.1
-5 乘以 2
[x+18-50-20-45z-2010288-2y45]=[-10-510-54-59-58-5-2-5w-5-4-5-9]
解题步骤 5.2
-5 乘以 10
[x+18-50-20-45z-2010288-2y45]=[-10-50-54-59-58-5-2-5w-5-4-5-9]
解题步骤 5.3
-5 乘以 4
[x+18-50-20-45z-2010288-2y45]=[-10-50-20-59-58-5-2-5w-5-4-5-9]
解题步骤 5.4
-5 乘以 9
[x+18-50-20-45z-2010288-2y45]=[-10-50-20-45-58-5-2-5w-5-4-5-9]
解题步骤 5.5
-5 乘以 8
[x+18-50-20-45z-2010288-2y45]=[-10-50-20-45-40-5-2-5w-5-4-5-9]
解题步骤 5.6
-5 乘以 -2
[x+18-50-20-45z-2010288-2y45]=[-10-50-20-45-4010-5w-5-4-5-9]
解题步骤 5.7
-5 乘以 -4
[x+18-50-20-45z-2010288-2y45]=[-10-50-20-45-4010-5w20-5-9]
解题步骤 5.8
-5 乘以 -9
[x+18-50-20-45z-2010288-2y45]=[-10-50-20-45-4010-5w2045]
[x+18-50-20-45z-2010288-2y45]=[-10-50-20-45-4010-5w2045]
解题步骤 6
Write as a linear system of equations.
x+18=-10
-50=-50
-20=-20
-45=-45
z-20=-40
10=10
28=-5w
8-2y=20
45=45
解题步骤 7
Since 45=45 is always true, the matrix equation has infinite solutions.
Infinite solutions satisfying the system.
 [x2  12  π  xdx ]