Lag times and differential equations

[martin_m-disabl]

Dear all,

in 2005 I received excellent support in this forum, that resulted in the attached mathcad 11-file (see "Lag times and differential equations" posted on 6/27/2005). As this version of mathcad is no longer available for me, I tried to use the file in Mathcad 14. But at the stage of the minerr-calculation I receive the error message that the variable is not defined. I invested some time to solve the problem, but without success.
Could you please help me to use the file in Mathcad 14?

Thanks a million in advance
Martin

[JohnArcher]

If you type k[31= or t[0= after your Green definitions they are =undefined.

Re-typing them defines them. Weird!

[martin_m-disabl]

Thanks a lot for the quick response.
I have redefined the variables, but was not successful. What ever I do I receive for the minerr function the message "variable not defined".

Any suggestion?

Martin

[TomGutman]

You're just confusing literal subscripts and array subscripts. The green definitions are all literal subscripts, the corresponding array subscript expressions are undefined.
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� � � � Tom Gutman

[martin_m-disabl]

I have accordingly adapted the given block and now it works.
Thanks a million
Martin