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Wronskian


In Mathematica 8, with the command

In[1]:= Wronskian[{LegendreP[n,xi],LegendreQ[n,xi]},xi]


we get


Out[1]= -(((1 + n) (LegendreP[1 + n, xi] LegendreQ[n, xi] - 
 
                                                             2
>          LegendreP[n, xi] LegendreQ[1 + n, xi])) / (-1 + xi ))

FullSimplify does not simplify the above expression to 1/(1-xi^2).

The result given by Mathematica is correct, but not as compact as
1/(1-xi^2).

Regards

Jog


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