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MathGroup Archive 2007

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Re: Applying a list of functions to a single number

  • To: mathgroup at smc.vnet.net
  • Subject: [mg74531] Re: Applying a list of functions to a single number
  • From: Peter Pein <petsie at dordos.net>
  • Date: Sat, 24 Mar 2007 05:21:47 -0500 (EST)
  • References: <eu1peu$eu1$1@smc.vnet.net>

siewsk at bp.com schrieb:
> Applying a list of functions to a single number
> =================================
> 
> I have
> 
> Square[x_]:=x^2
> Cube[x_]:=x^3
> 
> I have tried
> 
> In[2]:={Square,Cube} @ 5
> 
> Out[2]:= {Square,Cube}[5]
> 
> But what I wanted is a list containing
> 
>  {25,125}
> 
> Obviously I'm doing this the wrong way. What is the correct way?
> 
> 

two of them are:

Cube[x_] = x*(Square[x_] = x^2);

Through[{Square, Cube}[5]]
  {25, 125}

#[5]& /@ {Square, Cube}
  {25, 125}


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