Plot more than two functions

[MullenJohn]

With the HP Prime in CAS Mode I am trying to plot on one screen the Function, the First Derivative and the Second Derivative to interpret Concavity and Points of Inflection of the function.
For example:
√ F1(X): 2*(X²-9)/(X²-4)
√ F2(X): ∂F1(X)/∂X
√ F3(X): ∂F2(X)/∂X
Upon pressing the Plot key my plot only shows F1(X) and does not show F2(X) and/or F3(X).
Please tell me what I am doing incorrectly so that I may plot all three functions simultaneously.
Thanks – Cheers!