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Piecewise Function is giving Unknown variable error.

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I am using comsol 5.4. When I define a piecewise function and use it to write expression it is giving an "unknown variable error". (see images). What is going wrong here??(units are all correct)



2 Replies Last Post 6 feb 2020, 04:12 GMT-5

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Posted: 5 years ago 6 feb 2020, 04:03 GMT-5

Hi Ayush, you defined a function, thus should call it with its argument: Eac(n)

Hi Ayush, you defined a function, thus should call it with its argument: Eac(n)

Edgar J. Kaiser Certified Consultant

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Posted: 5 years ago 6 feb 2020, 04:12 GMT-5

The argument in the function call doesn't need to be 'n', which is just a generic variable in the function definition. It can be any valid expression. But there must be an argument.

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
The argument in the function call doesn't need to be 'n', which is just a generic variable in the function definition. It can be any valid expression. But there must be an argument.

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