Find the value of x and y for the below given simultaneous equations t...
For given system of equations to have no solution, the determinant of the coefficient matrix should be equal to 0
1 × (4x−24) − 1 × (2x−12) + 1(8−8) = 0
2x − 12 = 0
∴ x = 6
Augmented matrix is given by
For given system of equations to have no solution, rank of augmented matrix should be greater than coefficient matrix
∴ y − 12 ≠ 0
∴ y ≠ 12
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Find the value of x and y for the below given simultaneous equations t...
Explanation:
Given Equations:
a + b + c = 182
a + 4b + 6c = 122
a + xc + 4b = y
Analysis:
For the given simultaneous equations to have no solutions, the coefficients of the variables in the equations must be such that they lead to contradictory statements.
Identifying the Coefficients:
From the given equations, we can see that the coefficients of a are 1, 1, and 1 respectively.
The coefficients of b are 1, 4, and 4 respectively.
The coefficients of c are 1, 6, and x respectively.
Determining Conditions for No Solution:
For the equations to have no solution, the coefficients of the variables must not be able to be scaled or combined to create a consistent system of equations.
Calculating Values:
By analyzing the coefficients, we find that for x = 6 and y = 12, the equations become:
a + b + c = 182
a + 4b + 6c = 122
a + 6c + 4b = 12
Conclusion:
Since the coefficients lead to a contradictory system of equations, the given simultaneous equations have no solutions when x = 6 and y = 12. Therefore, the correct answer is option 'D', x = 6 and y ≠ 12.