variable undefined

[dmaynard]

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

[ValeryOchkov]

May be so

Use please  x[1 not x<1>

[MJG · Accepted solution]

Three issues that I found:

1. 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).
2. You used the Matrix Row operator, but should use the Matrix/Vector Index to call out the constants obtained from expfit.
3. You omitted the third constant from expfit.

[dmaynard]

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