Re: how to simplify Log[E^(2/3 x^(3/2))] ?

*To*: MATHGROUP at yoda.physics.unc.edu*Subject*: Re: how to simplify Log[E^(2/3 x^(3/2))] ?*From*: keiper (Jerry Keiper)*Date*: Tue, 19 Apr 1994 09:24:21 -0500

> Can somebody tell me why > Log[y E^(2/3 x^(3/2))] > cannot be simplified by using Simplify[]? It isn't clear what you want it to simplify to, but I might guess that you are looking for (2/3 x^(3/2)) Log[y]. The simple answer is that it doesn't simply to (2/3 x^(3/2)) Log[y] because it isn't true: In[1]:= {Log[y E^(2/3 x^(3/2))], (2/3 x^(3/2)) Log[y]} 3/2 3/2 (2 x )/3 2 x Log[y] Out[1]= {Log[E y], -------------} 3 In[2]:= % /. {x -> -7.0, y -> 1} Out[2]= {0. + 0.219531 I, 0} Jerry B. Keiper keiper at wri.com Wolfram Research, Inc.