Prime 3.0, correct format for NaN?

[dsochor]

I am a recent convert from MathCad 15 to Prime 3.0. In the attached Prime 3.0 worksheet, what is the correct formatting for stating if a variable is not an answer (NaN) to set a variable to one value, and if it is an answer to set it to another variable?

[Werner_E · Accepted solution]

You do it the same way in Prime as you did in Mathcad - you use the built-in boolean function IsNaN(...).

[dsochor]

As always, thank you Werner.

[athurin]

Alternatively :

kkkk := 2 - IsNaN(k.FBeam1)

[Werner_E]

Adrien Thurin wrote:

Alternatively :

kkkk := 2 - IsNaN(k.FBeam1)

Or as a vector index, so you still have a free choice which value to assign in either case: