How to determine if a function is differentiable at a point?

1.	How to determine if a function is differentiable at a point?
Answer» We can determine if afunction is differentiable at a point or not by looking at its graph. A function is not differentiable if its graph has a vertical line, a sharp edge, or discontinuity. Differentiability is a very important concept of calculus that finds its applications in many fields of engineering and science. We can determine whether a function is differentiable or not and hence predict its nature.

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