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Mathematical formulation of the step function in COMSOL 4 and beyond

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Hii..

Does anybody know what is the mathematical formulation of the smoothened step function that is used in COMSOL 4 and beyond. It appears its some sort of smoothened Heaviside function, but I am looking for the exact formulation.

Thanks

Paul

0 Replies Last Post Jun 19, 2014, 11:11 p.m. EDT
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Hello Mac Book

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