Questions 11–13 of 13. Imported answers require independent review unless marked reviewed.

Topic practice 13 questionsPage 2 of 2

Question 1

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PIMCQ1 markNeeds review
For any real, square and non-singular matrix

, the

is
Your answerChoose one option.

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Question 16

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PINAT1 markNeeds review
The diagonal elements of a 3-by-3 matrix are −10, 5 and 0, respectively. If two of its eigenvalues are −15 each, the third eigenvalue is ______

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Question 3

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PIMCQ1 markNeeds review
For an orthogonal matrix

, the valid equality is
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