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 | 1 | initial version |  |
Just an alternative:
sage: P = function('P')
sage: var('x,y')
sage: S(x) = sum(P(x,y),y,0,1)
sage: S(2)
P(2, 0) + P(2, 1)| | 2 | No.2 Revision |
Just an alternative:
sage: P = function('P')
sage: x,y = var('x,y')
sage: S(x) = sum(P(x,y),y,0,1)
sage: S(2)
P(2, 0) + P(2, 1)