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Proposition: Derivative of Cosine
The derivative of the cosine function $f(x)=\cos(x),$ $x\in\mathbb R,$ is $$f'(x)=-\sin(x).$$
Table of Contents
Proofs: 1
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References
Bibliography
- Forster Otto: "Analysis 1, Differential- und Integralrechnung einer Veränderlichen", Vieweg Studium, 1983