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Let A be 3x3 matrix. Suppose 1 and -1 are two of the three Eigen Values of A and 18 is one of the Eigen Values of A2+3A. Then____

a.) Both A and A2+3A are invertible.

b.) A2+3A but A is not.

c.) A is invertible but A2+3A is not invertible.

d.) Both A and A2+3A are not invertible.

1 Answer

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Shubhanshu asked Jul 24, 2017
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For the first one I have got -28 and 11 as the answer but for the matrix C I am not able to get the value of element c32.c31 = c33 = 6.