# Science talk:Math Exam Resources/Courses/MATH152/April 2016/Question A 24

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Unclear hint and remarks about solution107:33, 24 March 2018

## Unclear hint and remarks about solution

Hello,

For question MATH152/April 2016/Question A 24, the hint given is unclear (perhaps mention how the values given for V and D can be used to answer the question). Assuming that ${\displaystyle D}$ stands for the diagonal matrix obtained after diagonalizing the input, I have the following thoughts. It seems that the justification for c) and d) can be improved on by simply looking at the entries of D, and the matrix product ${\displaystyle VD}$ should be ${\displaystyle DV}$ instead.

Best,

Brian

00:00, 13 March 2018

I think what the matrix V and D mean should be mentioned in the solution. Also, as Brian mentioned, that could be a better hint. But I am not sure about how justification for c) and d) can be improved....

Aside from this, I hope all mathematical expressions are in the math mode.

07:33, 24 March 2018