Plotting a function defined by an integral on HP50

[cdecastro]

I appreciate the replies. I teach Calculus and spend a great deal of time exploring functions defined by integrals, rather than equivalent closed form expressions (when they exist), in an effort to build a deeper understanding of the process of integration and, more specifically, the Fundamental Theorem of Calculus.
As an expository approach, I explore the process of integration geometrically first before saying ANYTHING about any connection to the process of differentiation (if you tell students that integration is simply a process that in some sense "reverses" the process of differentiation - you totally remove the WOW in discovering this beautiful connection. )

Appreciatively,
Chris