Proof without Words: $$\pi^e < e^{\pi}$$

Mathematics Magazine
June, 1987

Subject classification(s): Inequalities | Comparison of numbers | Famous Numbers
Applicable Course(s): 4.1 Introduction to Proofs | 4.3 Number Theory

The author presents a geometric proof of $$\pi^e < e^{\pi}$$ by using a suitable function.

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