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This variable must be a function

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This variable must be a function

I do not know why... please...

2 REPLIES 2
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Re: This variable must be a function

You have to type a multiplication sign between k and the parenthesis. Otherwise Mathcad interprets it as a function k(...) which of course is not defined.

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Re: This variable must be a function

don't do it like this ..... but like this:

undefined.jpg

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