Q2 of 44 Page 4

For what value of x matrix A is singular?

(CBSE 2012)



⇒ (1 + x) × 8 – 7 × (3 – x) = 0


⇒ 8 + 8x – 21 + 7x = 0


⇒ 15x – 13 = 0


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