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10-31-2017
01:14 PM

10-31-2017
01:14 PM

My expfit equation is not plotting. I am getting an "undefined variable" error. When I backtrace the error, my modified expfit equation tells me that "t_e" is undefined and to check label is set correctly. On the plot, the array dimensions do not match. Unsure how to correct these issues. Pages 7 and 8 are the problems. Using mathcad prime 3.1

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10-31-2017
02:49 PM

10-31-2017
02:49 PM

Three issues that I found:

- You used exp^(z), where z = Ee2*te. This is a function raised to a power. You should use either exp(z) (function with input), or e^(z) (constaint raised to a power).
- You used the Matrix Row operator, but should use the Matrix/Vector Index to call out the constants obtained from expfit.
- You omitted the third constant from expfit.

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10-31-2017
02:49 PM

10-31-2017
02:49 PM

Re: variable undefined

May be so

Use please x[1 not x<1>

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10-31-2017
02:49 PM

10-31-2017
02:49 PM

Three issues that I found:

- You used exp^(z), where z = Ee2*te. This is a function raised to a power. You should use either exp(z) (function with input), or e^(z) (constaint raised to a power).
- You used the Matrix Row operator, but should use the Matrix/Vector Index to call out the constants obtained from expfit.
- You omitted the third constant from expfit.

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10-31-2017
03:24 PM

10-31-2017
03:24 PM

Re: variable undefined

Thank you for your help. I am trying to teach myself on this program and run into pitfalls occassionally. I appreciate the quick response.