Question

Choose the correct alternative.

If A = `[("a", 0, 0),(0, "a", 0),(0, 0,"a")]`, then |adj.A| = _______

विकल्प

• a¹²  

• a⁹ 

• a⁶ 

• a^–3 

Answer 1

adj A = `[("a"^2, 0, 0),(0, "a"^2, 0),(0, 0,"a"^2)]`

∴ |adj A| = `[("a"^2, 0, 0),(0, "a"^2, 0),(0, 0,"a"^2)]`

= a⁶.