  Math Central - mathcentral.uregina.ca  Quandaries & Queries    Q & Q    Topic: differentiable   start over

3 items are filed under this topic.    Page1/1            f(x)=(x^2-1)/(x-1) 2015-02-21 From Ahmed:Is f(x)=[(x^2-1)/(x-1) and x=2 at x=1] differentiable at x=1 ? Why ?Answered by Penny Nom.     Differentiable on an interval 2010-08-12 From Dave:Hi I was wondering if a function can be differentiable at its endpoint. For example if I have Y = X^2 and it is bounded on closed interval [1,4], then is the derivative of the function differentiable on the closed interval [1,4] or open interval (1,4). They always say in many theorems that function is continuous on closed interval [a,b] and differentiable on open interval (a,b) and an example of this is Rolle's theorem. Thank you for your help.Answered by Robert Dawson.     Differentiating y= square root(x-1) 2009-09-29 From edith:describe the x-values at which f is differentiable. y= square root(x-1)Answered by Penny Nom.      Page1/1    Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.    about math central :: site map :: links :: notre site français