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Add the values in an array

Add the values in an array

Add the values in an array

I have a 2x9 array and I want to have Mathcad 14 sum up all the elements. I've gone through the different types of summations in Mathcad and I haven't gotten any of them to work. I did manage to get what I want by turning each column of the matrix into a vector using the column command (M<> in the matrix toolbar) and then adding up each vector sum(ctrl-4). But it seems like this method shouldn't be necessary.

RE: Add the values in an array

That's great, I didn't know about the vec function, that's exactly what I wanted.

RE: Add the values in an array

Please note that the vec function is not built-in; I wrote it because I several needs for it.   It is defined within the Vector Support Function area (or, at least that's where I normally define it!).

RE: Add the values in an array

a simple and obvious solution that seems to work is sigma over i sigma over j M sub i,j


Greg Locock

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