Re: how-to with TI86 please?
[Prev][Next][Index][Thread]
Re: how-to with TI86 please?
Russell Spreeman wrote:
> I've graphed an equation using the "solver" which has four roots for
> the value of X, as displayed when I graph the equation... there are
> five
> vertical lines thru the X axis.
> But how do I easily determine the value of those X intersects?
> My
> algebra teacher showed me a way on his TI83 where he cursored over to
> an
> approximate intersect location and hit a key or two and the value of
> that point displayed... if I cursor to an X intersect and then hit
> "solve" I get what seems to be an X value which corresponds to that
> intersect after the solver has done its thing, BUT...
> ... is there a way to get the X values directly for all five
> roots of
> the equation without graphing it?
> ... how do I quickly determine the values of the X intercepts
> without
> going back to the SOLVER and doing them one at a time?
> There must be a way!! I'll be watching for the answer, which I
> hope
> someone will be kind enough to help me out with.
>
> R. Spreeman
>
> visit my website at:
> http://members.tripod.com/~spreeman/index.html
You might want to try the Poly function on the 86.
Hit poly, and type in the order of your equation (the highest exponent)
then type in the coeffeicents and hit solve, and it'll give you all of
the roots.
Follow-Ups:
References: