Plotting a function defined by an integral on HP50

[peacecalc]

Last explorations:

The defined function Y1(x) = B(X). If you input a numerical or a symbolic value to the stack you and press Y1 you get the answer:

\[ \int_{1}^{X^2} 2 \cdot T dT |_{X=Value} \]

and this expression can be calculated obviously in the graphic enviroment. I tried this also with an non-integrable expression like:

\[ \int_{1}^{X^2} e^{- T^2} dT \]

and it works, too! The mode of the calculator was set on "exact" and wasn't change after drawing the graph.