The Variabe is undefined when ploting a graph of a function

[KO_10903471]

Im very new to mathcad and Im not sure what to do here, the function itself works just fine but when I try to put it into a graph it just doesnt work

[LucMeekes · Accepted solution]

Welcome to this forum

1. You should attach your Prime worksheet, not just a picture. And if possible state what version of Prime you are using.

2. Prime reads ìts worksheets from left to right, top to bottom. The plot's upper left corner is above the definition of t(r), so the plot doesn't 'know' the definition of t(r) yet...

Move the plot down (to the right and/or below the definition of t(r) ), so that Prime reads the definition before the plot.

Success!
Luc