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**iLloyd054****Member**- Registered: 2014-04-01
- Posts: 10

1. 3x3 matrix question.

2, s, t

Determine the value of 3s+t when A= 2, 0, s+t is a symmetric matrix.

3, 3, t

*Last edited by iLloyd054 (2014-04-02 01:00:24)*

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 82,717

Hi iLloyd054;

Have you copied the problem correctly?

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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**iLloyd054****Member**- Registered: 2014-04-01
- Posts: 10

ooh! my bad

1. 3x3 matrix question.

2, s, t

Determine the value of 3s+t when A= 2s, 0, s+t is a symmetric matrix.

3, 3, t

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 82,717

This is the way I see your matrix A.

We have t = 3 and s = 0

so 3s + t = 3

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

**Online**