Connecting a keyboard to a HP Prime G2? And other questions.

[Nigel (UK)]

(02-27-2019 06:38 PM)TheLastMillennial Wrote:  

(02-27-2019 11:28 AM)Nigel (UK) Wrote:  Try using a variable other than X in your integral as the dummy variable. Works for me when I do that!

Nigel (UK)

That's not quite what I'm looking for. When a variable is in the limits of the integral, the calculator just replaces that variable with the numeric value that's stored in it. For example, lets say U=3
If I do the integral of U^2 from 0 to U with respect to U then it just becomes
The integral of U^2 from 0 to 3 with respect to U rather than becoming (U^3)/3.

Maybe I wasn't clear enough. I've got X set as the independent variable and I'm using C as the variable of integration (what I called the dummy variable in my first post). The integral I've typed in is
$$\int_1^{X^2}\!3C^2+2C-1 \;{\rm d} C$$
and, when graphed, this gives the same graph as shown on your TI-84 CE emulator. I think that the errors that the Prime returns are due to the use of the independent variable as a variable of integration.

For what it's worth, the physical Prime (I have a version 1) is quite a lot faster at drawing the graph than the TI-84 CE emulator in your screen capture. Prime FTW!

Nigel (UK)