Re: Help needed with csolve function on the 92

To: CALC-TI@LISTS.PPP.TI.COM
Subject: Re: Help needed with csolve function on the 92
From: Glenn Fisher <Fisher@uh.edu>
Date: Wed, 24 Sep 1997 08:02:42 -0500
Organization: University of Houston - retired
References: <199709121605.SAA28454@skycorp.skynet.be> <3419B69E.2290@bangornews.infi.net>
Reply-To: Fisher@uh.edu
Xref: paladin.american.edu bit.listserv.calc-ti:17041

> Alexis wrote:
> >
> > Hello !
> >
> > Yesterday I had to solve the following equation :
> > (-3+i)x2+(5i-1)x+2=0
> > I tried it with the csolve fucntion and all I got was an approximation. I
> > thus tried to use the well known quadratic formula within a function
> > (-b+/-sqr(b2-4ac)/2a) and I got the exact answer. How is that possible ?
> > Doesn't the 92 use this formula to solve that kind of equation ?

I tried this on my 92 (v1.7) and it worked ok, i. e. gave me the
exact answer.  Maybe you didn't use 2nd i for the complex i
in your constants.
HTH
--
--------------------------------------------------------------
| Glenn E. Fisher -retired    Internet: Fisher@uh.edu        |
| Central Computing Services  http://www.uh.edu/~fisher      |
| University of Houston       Houston, Texas                 |
| My home address:      22402 Diane Dr., Spring, Texas 77373 |
--------------------------------------------------------------

References:

Help needed with csolve function on the 92

From: Alexis <Vanpir@skynet.be>

Re: Help needed with csolve function on the 92

From: Notrub <notrub1@bangornews.infi.net>

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