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How can I create a 5x5 matrix with the following criterion: aij = 2cos(0.4(i-j)π)

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Star Strider
Star Strider 2016-2-12

0 个投票

A bit more efficiently, using meshgrid:
[i,j] = meshgrid(1:5);
a = 2*cos(0.4*(i-j)*pi);

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Taner Cokyasar
Taner Cokyasar 2016-2-12
Thank you very much. It works out great!
Star Strider
Star Strider 2016-2-12
My pleasure!
The meshgrid function can make a number of matrix calculations easier.

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jgg
jgg 2016-2-12

0 个投票

Try this
A = 2*cos(0.4.*pi.*(repmat([1:5]',1,5) - repmat([1:5],5,1)));

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