Determinants
Xam Idea
CBSE
Grade 12
Question:
If system $x + y + z = 6, x + 2y + 3z = 10, x + 2y + \lambda z = \mu$ has unique solution, then:
(a) $\lambda
eq 3$
(b) $\lambda = 3$
(c) $\mu
eq 10$
(d) $\lambda = 3, \mu = 10$
Step-by-Step Solution
Key Concept: |A| = \lambda - 3 != 0 => \lambda != 3.
The detailed step-by-step mathematical proof is available inside the Mathbee app workspace.
Correct Answer: $\lambda \neq 3$
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