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Student Support Forum: '"Collect" function use' topicStudent Support Forum > General > Archives > ""Collect" function use"

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Bob Stewart
02/04/13 2:47pm

Example: For the polynomial "poly = x + 3 x^2 + 2 x^3 - 2 y +6 x y - 5 x^2 y + 8 x y^2 - 4 x^2 y^2" the function Collect[poly,y] gives "x + 3 x^2 +2 x^3 + (-2 +6 x - 5 x^2) y + (8 x - 4 x^2) y^2". How do I select the individual coefficients of y^n , n = 0,1,2 to individually work on them, like for example to take the derivative of the coefficient of y^2?

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Subject (listing for '"Collect" function use')
Author Date Posted
"Collect" function use Bob Stewart 02/04/13 2:47pm
Re: S. Saralamba 02/04/13 10:59pm
Re: Bill Simpson 02/05/13 00:52am
Re: Peter Pein 02/05/13 07:15am
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