in Linear Algebra
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1 vote
1 vote

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.

in Linear Algebra
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2 Comments

I am getting A..what is the answer?
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A is the answer
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1 Answer

2 votes
2 votes
  • Option a is right both are invertable

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2 Comments

How you get $\lambda _{3}$ $= -6 or 3$ for A
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how???
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