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MathGroup Archive 2001

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Re: Determine the "value range" of a function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg27170] Re: [mg27157] Determine the "value range" of a function
  • From: BobHanlon at aol.com
  • Date: Fri, 9 Feb 2001 03:10:18 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

f[x_] := Sin[x];

f /@ (x /. Solve[D[f[x], x] == 0, x])

{-1, 1}

Bob Hanlon

In a message dated 2001/2/8 4:46:46 AM, Heidenreich at helimail.de writes:

>maybe its trivial but how can i determine the "value range" of a function?
>like  f(x)=Sin(x)     -> Range =-1..1
>


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