Gate CS-2015-1 Question Paper With Solutions

Q. 46 Consider the following 2 × 2 matrix A where two elements are unknown and are marked by a and b. The eigenvalues of this matrix are –1 and 7. What are the values of a and b?

A = | 1  4 |
    | b  a |

(A) a = 6, b = 4

(B) a = 4, b = 6

(C) a = 3, b = 5

(D) a = 5, b = 3

Answer: (D)

Explanation:

Gate CS-2015-1 Question Paper With Solutions

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