However, college students can't escape Euler's torture. From Euler line of elementary geometry, euler theorem of polyhedron, Euler transformation formula of solid analytic geometry, Euler solution of quartic equation in number theory to Euler function, Euler equation of differential equation, Euler constant of series theory, Euler equation of variational method and Euler formula of complex variable function, they are all gifts for science students.
By the way, he also founded several brand-new disciplines: topology, ballistics and analytical mechanics. His family was destroyed by a fire, and most of his achievements were destroyed. He lost his sight in his later years, but this did not prevent him from making more achievements in mathematics. He can add the term 17 in the complex convergence series to the 50th place by mental arithmetic.
His most famous formula is Euler's formula, which is very simple, but it is called the first formula of the universe and contains all mathematical truths. However, even if many mathematicians can't understand it all their lives, this formula is difficult to calculate. You can prove it in any way, in many different ways, by mathematical induction, reasoning, fractional derivative, complex variable function and even plane geometry, physics and topology. This is why it contains all mathematical truths, even the most reasonable laws in the universe.
Physicist Chad Feynman exclaimed: Euler's identity is not only "the most wonderful formula in mathematics", but also the quantitative heel of modern physics. Gauss once said, "If a person doesn't feel the charm of this formula when he first sees it, he can't be a mathematician."