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Student Support Forum: 'How to solve this tricky derivative' topicStudent Support Forum > General > Archives > "How to solve this tricky derivative"

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Enrique Vargas
06/29/00 8:22pm

I have an expresion like this:
a=Sum[Subscript[x, i]^2, {i, 1, n}]

How can I get the derivative of this expresion respect to Subscript[x,j]
I should get
D[a,Subscript[x,j]] = 2*Subscript[x, j]

And I get cero as result

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How to solve this tricky derivative Enrique Vargas 06/29/00 8:22pm
Re: How to solve this tricky derivative Forum Modera... 07/01/00 06:55am
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