problem solved thank you

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john hollywood
john hollywood 2014-2-22
编辑： john hollywood 2014-2-23
thank you in ,much apprichated

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Walter Roberson
Walter Roberson 2014-2-22
Hint:
diag(a,b) + diag(c,d)
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john hollywood
john hollywood 2014-2-22
sorry i really confuse diag([2 2 2 2 ]), diag([-1 -1 -1 -1], 2), diag([-1 -1 -1 -1],-1) i got this but its not giving the right answer . what am doing wrong ?
Star Strider
Star Strider 2014-2-22
For a 5x5 matrix, the main diagonal needs to have 5 elements: [2 2 2 2 2].

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