How can i remove one element from this matrix

D= [2 0 0 0 1; 2 2 0 0 1; 0 0 2 0 1; 0 0 0 2 1; 0 0 0 0 3] How can I remove this element (2,1)

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Answer 1

[madhan ravi]

In the question you asked second row has 4 elements while the rest has 5 elements, algebra??

You can't have hole in a matrix so replacing is an option:

D(2,1) = Nan % replace it with NaN or zero for example