Jabarkan Q.E.D. dari Rumus Euler

Tentukan bilangan kompleks  seperti yang

(mengabaikan istilah modulus, karena ini akan dibatalkan nanti)

Menggunakan fakta i2 = -1:

Memisahkan variabel dan mengintegrasikan kedua sisi:

Euler and his beautiful and extraordinary formula by Antonio Gutierrez from Geometry Step by Step from the Land of the Incas.

Euler's Formula - Puzzle: 55 pieces in a six star style of piece by Antonio Gutierrez from Geometry Step by Step from the Land of the Incas.

Detailed Proof of Euler's Relation  by Craig Lewis.

Proof of Euler's Formula  by Julius O. Smith III

Euler's Formula and Fermat's Last Theorem