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Consider the system of linear equations a_1x+b_1y+c_1z+d_1=0 , a_2x + b_2y+c_2z+d_2=0and a_3x+b_3y+c_3z+d_3=0 . Let us denoteby Delta(a,b,c) the determinant |(a_1,b_1,c_1),(a_2,b_2,c_2),(a_3,b_3,c_3)| . IfDelta(a,b,c)ne0, thenthe value of x in the uniquesolutionof the aboveequationsis : |
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Answer» `(Delta(BCD))/(Delta(ABC))` |
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