Re: function

*To*: mathgroup at yoda.physics.unc.edu*Subject*: Re: function*From*: alex at fff.chem.utah.edu (Alex Dommasch)*Date*: Mon, 26 Oct 92 17:23:27 MST

> A question about forming functions. Suppose I create a series, using > > a=Normal[Series[Sin[x],{x,0,5}]] > > giving a = x - x^3/3! + x^5/5!. > > I now want to use a to create a function of x, which, functionally, > is > > f[x_]:=a. > > This will not work in practice. Is there a way to do this? For > something short, as in this example > > -r. kline > rvk at blink.att.com How about: In[1]:= f[x_] := Normal[Series[Sin[x], {x, 0, 5}]] In[2]:= f[y] Out[2]= 3 5 y y y - -- + --- 6 120 -- D. A. (Alex) Dommasch, Programmer Field-Flow Fractionation Research Center Department of Chemistry, University of Utah Salt Lake City, Utah 84112 (801)581-7168 FAX: (801)581-4353 alex at fff.chem.utah.edu (NeXT Mail)