TI-M: Re: on TI-89: can I compare expressions... ?
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TI-M: Re: on TI-89: can I compare expressions... ?
you should be able to type in Func1=Func2, and it will return true or false.
In my experience, that hasn't always worked in more complex problems.
remember, make sure you can do it by hand before you let your calc do it.
that's my rule of thumb. I'm not going to take the easy way out if i don't
know how... But anyway, that should work.. hmm.. anyone else have any
ideas? (i think the 89 does it algebraically, but it doesn't know ALL the
rulez, so it may say false on something that is indeed true) Just start
with stuff like 1=1 and see what it says.
me, myself,and sometimes I
----- Original Message -----
From: "gloverbo" <gloverbo@msu.edu>
To: <ti-math@lists.ticalc.org>
Sent: Monday, October 02, 2000 11:12 PM
Subject: TI-M: on TI-89: can I compare expressions... ?
>
> This is probably an easy question, but is there a sort of comparison
> function on the TI-89 that would allow me to compare two expressions or
> functions to see if they are equal to eachother?
>
> Such as,
>
> Is [(x^2 + y^2) = (x*x 1/y^-2)] ? or how about is [e^(x-y) = e^x -
> e^y] ?
> And the calculator would tell me "yes" or "1", or "no" or "0"
> I know that the 1st expression above is indeed true. But these are just
> an examples.
>
> I'm hoping to be able to find a way to compare any expression to another
> that may be the same thing, but written differently, to see if they are
> equal to eachother. It may involve multiple variables like above, so
> graphing and comparing won't always be an option (as far as I know).
> This is would be a great time saver for me.
>
> Thanks for any input.
>
> B. Glover
>
>
>
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