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Talk:Formal power series: Difference between revisions
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:::Yep, the task name is misleading. When it says "formal series" that gives an impression of some generalized framework for dealing with more or less '''any''' series, Fourier, Chebyshev, not just Taylor ones. Laurent series is yet another story. It goes in direction of approximations by rational polynomials, Padé etc. So what is the task about? The example of a definition of cos-sin has almost nothing to do with either series or approximations and how they are dealt with in real world. (I addressed this issue in a subthread.) --[[User:Dmitry-kazakov|Dmitry-kazakov]] 09:44, 12 March 2009 (UTC)
:::: I am trying to understand better, and it's why I still haven't added code: to me one thing is to "handle" a formal power series (big but still finite array for a computer language?), another thing is to ''generate'' a formal power series. The first can be accomplished without caring too much, we need only to put constraints over some coefficient for operations like / (maybe, not sure, enough the constant is not zero for the division? ... anyway still problems, since we indeed manipulate "finite" series, can arise, but maybe the task asks to disregard these details). I admit I've not taken a deep look to posted codes yet. --[[User:ShinTakezou|ShinTakezou]] 13:37, 13 March 2009 (UTC)
==About solving equations==
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