有限数学 示例

Solve Using a Matrix by Elimination (2x+5y+3z)=1 , (x+2y+2z)=0 , (4x+9y+7z)=1
, ,
解题步骤 1
Move variables to the left and constant terms to the right.
点击获取更多步骤...
解题步骤 1.1
去掉圆括号。
解题步骤 1.2
去掉圆括号。
解题步骤 1.3
去掉圆括号。
解题步骤 2
Write the system as a matrix.
解题步骤 3
求行简化阶梯形矩阵。
点击获取更多步骤...
解题步骤 3.1
Multiply each element of by to make the entry at a .
点击获取更多步骤...
解题步骤 3.1.1
Multiply each element of by to make the entry at a .
解题步骤 3.1.2
化简
解题步骤 3.2
Perform the row operation to make the entry at a .
点击获取更多步骤...
解题步骤 3.2.1
Perform the row operation to make the entry at a .
解题步骤 3.2.2
化简
解题步骤 3.3
Perform the row operation to make the entry at a .
点击获取更多步骤...
解题步骤 3.3.1
Perform the row operation to make the entry at a .
解题步骤 3.3.2
化简
解题步骤 3.4
Multiply each element of by to make the entry at a .
点击获取更多步骤...
解题步骤 3.4.1
Multiply each element of by to make the entry at a .
解题步骤 3.4.2
化简
解题步骤 3.5
Perform the row operation to make the entry at a .
点击获取更多步骤...
解题步骤 3.5.1
Perform the row operation to make the entry at a .
解题步骤 3.5.2
化简
解题步骤 3.6
Perform the row operation to make the entry at a .
点击获取更多步骤...
解题步骤 3.6.1
Perform the row operation to make the entry at a .
解题步骤 3.6.2
化简
解题步骤 4
Use the result matrix to declare the final solution to the system of equations.
解题步骤 5
The solution is the set of ordered pairs that make the system true.