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 Sujet: continuous function
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 Continuity on a closed interval 2014-09-21 Pragya pose la question :The trouble I'm having is as follows : a continuous function is most of the times defined on a closed interval, but how is it possible to define it on a closed interval ,because to be continuous at endpoints of the interval the function's limit must exist at that endpoint,for which it has to be defined in its neighborhood,but we don't know anything about whether the function is always defined in the neighborhood. Please help...Penny Nom lui répond. The continuity of f(x,y)=ln(x^2+y^2) 2013-02-17 anu pose la question :the question says we have to find the points in the plane where the function is continuous: f(x,y)=ln(x^2+y^2) . here we aren't given a particular point (x,y) where we have to check a function's continuity. what is to be done if we have to check continuity over the whole domain of the function? please help .Harley Weston lui répond.

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