       Re: Limit problem

• To: mathgroup at smc.vnet.net
• Subject: [mg51127] Re: Limit problem
• From: "Matthew Senn" <msenn at chaotic_nospam_delusions.com>
• Date: Tue, 5 Oct 2004 04:37:19 -0400 (EDT)
• References: <cjr9ce\$osq\$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```Here is what I get running version 4.2.0.0

In:=
f[x_]:=Sin[12*x^2]/(3*x^2)

In:=
Limit[(f[0.4 + h] - f[0.4])/h, h -> 0]

Out=
-16.631

In:=
f'[0.4]

Out=
-16.631

"Mike Zeitzew" <pdop at yahoo.com> wrote in message
news:cjr9ce\$osq\$1 at smc.vnet.net...
> Why is Limit giving me the wrong answer for this simple divided
> difference?   I am using 5.0.1.0 /
> XP
>
> In:=
> Clear[f,h,x]
>
> In:=
> f[x_]:=Sin[12*x^2]/(3*x^2)
>
> In:= Limit[(f[0.4 + h] - f[0.4])/h, h -> 0]
>
> Out=
> -&#8734;
>
> In:=
> f'[0.4]
>
> Out=
> -16.631
>

```

• Prev by Date: Re: Print with limited precision
• Next by Date: Re: A way around the limitations of Re[] and Im[]
• Previous by thread: Limit problem
• Next by thread: Re: Limit problem