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Proposition: Derivate of Absolute Value Function Does Not Exist at \(0\)
The absolute value function $f(x)=x,$ $x\in\mathbb R,$ has no derivative at the point $x=0.$ However, it has a left and a rightderivative at this point.
Table of Contents
Proofs: 1
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References
Bibliography
 Forster Otto: "Analysis 1, Differential und Integralrechnung einer VerĂ¤nderlichen", Vieweg Studium, 1983