Differentiability at a point: algebraic (function isn't differentiable)

Differentiable Function: Meaning, Formulas and Examples | Outlier

Describe several ways in which a function can fail to be differentiable. Illustrate with sketches.

Explaining the Relationship Between Differentiability and Continuity | Calculus | Study.com

Calculus Lecture 9: Basic Differentiation Formulas & Continuity vs Differentiability

Derivatives of inverse functions: from equation

Differentiability of Functions | Overview, Equation & Examples

Answered: What is the rule for calculating the derivative of a composition of two differentiable functions? How is such a derivative evaluated? Give examples. | bartleby