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James
Posts:
1
Registered:
7/3/13


Calculating derivate in Mathematica 9 giving wrong result
Posted:
Jul 3, 2013 4:52 AM


In[5]:= D[(x^2  2)/(x^3 + 6), x]
Out[5]= ((3 x^2 (2 + x^2))/(6 + x^3)^2) + (2 x)/(6 + x^3)
That is from Mathematica 9.
The wolfram alpha site and my textbook give this answer:
d/dx((x^2+x2)/(x^3+6)) = (x^42 x^3+6 x^2+12x+6)/(x^3+6)^2
Please tell me what I am doing wrong.



