Re: der3??
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Re: der3??
You can get a fourth derivative on the TI-85.
Try graphing this
y1=x^4+x^3+x^2+x+1
y2=der1(y1,x,x)
y3=der2(y1,x,x)
y4=nDer(der2(y1,x,x),x,x
y5=nDer(nDer(der2(y1,x,x),x,x),x,x)
Window -3,3,1,-10,30,1
Or on the home screen try
nDer(nDer(der2(x^4+x^3+x^2+x+1,x),x),x,1)
to get the value of the forth derivative at x=1,
=24.
------------------------------------------------------------------
Ben Sultenfuss <bsultenfuss@sfasu.edu>
Stephen F. Austin State University
Department of Mathematics and Statistics
1936 North Street, PO Box 13040, SFA Station
Nacogdoches, Texas 75962-3040
Voice: Office: 409-468-3805 Home: 409-560-5508
Fax: Office: 409-468-1669 Home: 409-560-0038
Office Hours: Mon-Fri 8:00-8:50 am, Mon-Thur 2:00-4:00 pm Local
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> From: Jeff Tyrrill <Jeff_Tyrrill@MSN.COM>
> To: CALC-TI@LISTS.PPP.TI.COM
> Subject: Re: der3??
> Date: Saturday, November 01, 1997 22:42
>
> No, the nDer() function only gives first order, and only extra level of
nested nDer()s is allowed.
> ________________
>
> Jeff Tyrrill
> http://tyrrill-ticalc.home.ml.org/
> http://ti-philes.home.ml.org/
>
>
> -----Original Message-----
> From: Tavis Segura [SMTP:tsegura@RICE.EDU]
> Sent: Saturday, November 01, 1997 3:08 PM
> To: CALC-TI@LISTS.PPP.TI.COM
> Subject: Re: der3??
>
> Junaid Mansuri wrote:
> >
> > I know that the Ti-85 calculator does der1( ) and der2( )
> > but does anyone know how to take the third derivative of a function at x.
> > (I only need a numerical answer)
> >
> > Thanks a lot,
> > Junaid Mansuri
> > jmansuri@juno.com
> If I am not mistaken, there is a function on the TI-85 called nDer( )
> that finds the derivative of any given order.
> -Tavis