A function is differentiable if it has a defined derivative for every input, or for every x. A function will be differentiable iff it follows the Weierstrass-Carathéodory criterion for differentiation. Differentiability is a stronger condition than continuity; and differentiable function will also be continuous. File:Integral apl obsah2.svg This calculus-related article contains minimal information concerning its topic. You can help the Mathematics Wikia by adding to it.