◀ ▲ ▶Branches / Analysis / Proposition: Eveness of the Cosine of a Real Variable
Proposition: Eveness of the Cosine of a Real Variable
The cosine of a real variable is an even function, i.e.
\[\cos(-x)=\cos(x),\quad\quad x\in\mathbb R.\]
In particular, its graph is symmetric with respect to the \(y\)-axis.
Table of Contents
Proofs: 1
Mentioned in:
Examples: 1
Thank you to the contributors under CC BY-SA 4.0! 
- Github:
-
References
Bibliography
- Forster Otto: "Analysis 1, Differential- und Integralrechnung einer Veränderlichen", Vieweg Studium, 1983
