Plotting Differential Equations

[Chease]

Does anyone know how to plot differential equations with the variable 't' in it on a t-nspire calc?

I can do the normal x/y's but I don't know what to do when 't' is in it.

[Howzat]

Post a question up for all of us.

From personal experience, I have not seen any variable with a t. (Unless we were to convert to some other form, but I doubt that would be applicable here)

[abeybaby]

In the graphing tab, click menu, graph type, differential equation

[Chease]

Yes i know about the graph type, but when you enter a derivative function that contains 't' it fails to graph it.

I'll post up a question later

[Soul_Khan]

I'm assuming your trying to do this:

f1(x)= t^2 (some function which contains t)

will you can't because the function is a function with respect to x not t
if you want to work out a differential equation with 't'

just make it f1(t) or just use f1(x) but replace the 't' in the equation you want to graph with x and it should work

sorry if i've misunderstood what you have said

[Chease]

I think it's a little different than just simply changing the t to x.

It was a multiple choice in a practice exam i did. And some of the options were in x/y, others were in t.

I haven't got my practice exam back yet (Teachers marking them). Will try to scan out the question or retype it when i can.

[InsaneMcFries]

Were they in parametric form? You may have to convert it to Cartesian form.

[Jenny_2108]

I think it's a little different than just simply changing the t to x.

It was a multiple choice in a practice exam i did. And some of the options were in x/y, others were in t.

I haven't got my practice exam back yet (Teachers marking them). Will try to scan out the question or retype it when i can.

If they are in parametric form, you click menu -> (3) graph type -> (2) parametric, then enter equation in form of t

[abeybaby]

ahhhh i think i see what youre saying. so you needed to graph something like, y'=2xy?

then you need to type y1 or y2 or y3 etc, depending on which line youre entering it in.

so you could type:
y1'=2x*y1