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2012-03-30 21:39:44 +0200 | asked a question | Symbolic limit computation Suppose W(t) is a function of t, and h(t,z) is a function of t and z. Define X(t,z) as follows. Now, I want to compute the limit of X as z tends to W(t). I have tried the command but this does not work. I guess a simpler example is the following. Sage does not give the "right" answer, namely the derivative of W. Any suggestion/comment is welcome and appreciated. |