How to avoid complex exponents?
- To: mathgroup at smc.vnet.net
- Subject: [mg24931] How to avoid complex exponents?
- From: "Peter Chan" <y6k at hotmail.com>
- Date: Tue, 22 Aug 2000 16:22:41 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
What is the simplest way to avoid the complex exponents, i.e.
exp((-1)^(1/3))
and exp((-1)^(2/3)), given by Mathematica 4.0 in the solution of the
following
differential equation?
Thanks.
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Mathematica 4.0 :
In[1]:= DSolve[y''[x]+y'[x]+y[x]==0,y[x],x]
2/3
C[1] (-1) x
Out[1]= {{y[x] -> ---------- + E C[2]}}
1/3
(-1) x
E
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