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Question: Cannot collect x^(r+1)

Question:Cannot collect x^(r+1)

lemelinm 1505 Maple
October 16 2008
0

Hi

 

> eq1 := -x^(r+1)*(r-1)/(r*(r-2)^2)-x^(r+1)*(r-1)/(r^2*(r-2));

                          (r + 1)            (r + 1)        
                         x        (r - 1)   x        (r - 1)
                eq1 := - ---------------- - ----------------
                                     2          2           
                            r (r - 2)          r  (r - 2)   
> eq2 := collect(eq1, x^(r+1));

Error, (in collect) cannot collect x^(r+1)

Any idea?

Mario
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