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Leonhard euler (1April 70715 ~1September 783 18) was a Swiss mathematician and natural scientist. 1707 was born in Basel, Switzerland on April 5, and 1783 died in St. Petersburg, Russia on September 8. Euler was born in a priest's family and was influenced by his father since childhood.

/kloc entered university of basel at the age of 0/3, graduated from university at the age of 0/5, and obtained a master's degree at the age of 0/6. Euler is one of the most outstanding figures in the field of mathematics in the18th century. He not only made contributions in the field of mathematics, but also pushed the whole mathematics into the field of physics.

He is the most prolific mathematician in the history of mathematics, writing more than 800 pages of papers every year on average. He also wrote a large number of textbooks on mechanics, analysis, geometry and variational methods. Introduction to Differential Analysis, Principles of Differential Calculus and Principles of Integral Calculus have all become classic works in the field of mathematics.

Euler studied mathematics so extensively that important constants, formulas and theorems named after him can often be seen in many branches of mathematics.

Expanding data Euler's rich mind often opens the way for others to make famous discoveries. For example, the French mathematician and physicist Joseph-Louis Lagrange created a set of equations called "Lagrange Equation". This equation is very important in theory and can be used to solve many mechanical problems.

However, because the basic equation was first proposed by Euler, it is usually called Euler-Lagrange equation. It is generally believed that another French mathematician, jean baptiste joseph fourier, created an important mathematical method called Fourier analysis, and its basic equation was originally founded by lennert Euler, so it is called Euler-Fourier equation.

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