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TI89 for Differential Equations?!?

anoviceanovice Registered User Posts: 1,376 Senior Member
edited April 2006 in College Life
Can someone give me a crash course on using the TI89 to solve DE's? Like finding the general solution and solutions to IVPs... I know you put it in the deSolve(function, x,y) blah blah blah but the answer is never in the right form.

Anyone? know of any websites? Thanks!
Post edited by anovice on

Replies to: TI89 for Differential Equations?!?

  • lastpickedlastpicked Registered User Posts: 42 Junior Member
    learn to integrate and seperate
  • boxesarefunboxesarefun Registered User Posts: 163 Junior Member
  • CitanCitan Registered User Posts: 2,287 Senior Member
    my prof doesnt let us use them...89 for diff eq is practically cheating
  • anoviceanovice Registered User Posts: 1,376 Senior Member
    I just want to use my calc to check my answers on homework. So thank you to boxesarefun for answering the question and not ranting about my practices.

    If I didn't know how to do it manually a calculator wouldn't even help because just showing the answer not only gets me a zero for that problem but my prof subtracts points off the total(ie I can get a -1 for a problem).

    Thanks again.
  • TooyaTooya Registered User Posts: 271 Junior Member
    ti-89 you ask?

    On the home screen, press f3. :)
  • ee_stuee_stu Registered User Posts: 482 Member
    Why don't you just plug the solution(s) back into the differential equation and see if you get an identity? You are talking about elementary differential equations, right? If not, then my bad.
  • MicklerobeMicklerobe Registered User Posts: 64 Junior Member
    It's not necessarily cheating. In my class we get long involved problems, and on the AP tests for Calc the open ended problems are many step, and its more a test of concepts, not can you do the nitty gritty work of differentiation.
  • mercurysquadmercurysquad Registered User Posts: 2,723 Senior Member
    Well it has its uses in elec.engg. or physics classes where you gotta solve an ODE to get the final answer but the question is not about solving ODEs, but about elec.engg. or physics concepts.
This discussion has been closed.