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Consider the system of equations

ax + 3y + z = 5

2x – y + 2az = 3

x + 4y + az = 6

The value of a for which the above equations posses an unique solution.

  • a)
    a = 1

  • b)
    a = -1

  • c)
    a ≠ 

  • d)

Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the system of equationsax + 3y + z = 52x – y + 2az = 3x...
Determinant of matrix A,

a{– a –8a} –3{2a – 2a} + 1 {1 + 4}



9a2 ≠ 9

a2 ≠ 1 
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Consider the system of equationsax + 3y + z = 52x – y + 2az = 3x + 4y + az = 6The value of a for which the above equations posses an unique solution.a)a = 1b)a = -1c)a≠d)Correct answer is option 'C'. Can you explain this answer?
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