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Proposition: Difference of Squares of Hyperbolic Cosine and Hyperbolic Sine

The following formula holds for all $x\in\mathbb R:$ $$\cosh^2(x)-\sinh^2(x)=1.$$

Table of Contents

Proofs: 1

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References

Bibliography

  1. Forster Otto: "Analysis 1, Differential- und Integralrechnung einer Veränderlichen", Vieweg Studium, 1983