Joseph Louis Lagrange
By Daniel Tovbin and Wenjun
Ouyang of 701
Life of Joseph Louis Lagrange
Joseph Louis Lagrange was born on January 25,
1736 in Turin, Sardinia.
Lagrange died on April 10, 1813 in Paris,
France. He was 77 years old when he died.
He was influenced by the work of a Halley’s
1693’s work on the use of algebra and optics.
Lagrange was 1 of 11 children.
He was married to Renée-Françoise-Adélaide Le
Education and Career
educated at the
college of Turin.
He was then offered to
work in the Berlin
He was a founding
member of the Royal
Academy of Science
What was Joseph Louis Lagrange famous for?
Lagrange was one of the creators of the calculus
of variations, which is a field of mathematics that
deals with a functional.
He also invented the method of solving
He proved that every natural number is the sum
of four squares, which is now known as
Lagrange’s four square theorem.
• Lagrange solved the resulting system
of the n+1 differential equations.
• He applied his methods to the study
of Jupiter’s and Saturn’s orbit.
• He also reduced the equations of the
quadrics into their canonical forms.
Awards and Prizes
Lagrange was awarded the Grand Croix Ordre Imperial
de la Reunion.
He was awarded the 1764 prize of the French
Academy of Sciences for his memoir on the
libration of the Moon.
He won the 1772 prize on the three body problem with
He had won the 1774 prize for finding about the motion
of the moon.
He also had won the 1780 prize on perturbations of the
orbits of comets by the planets.
Some interesting facts about Joseph Louis
• Lagrange had worked for Fredrick II of Berlin
for 20 years.
• In his appearance, Lagrange was medium
height with pale blue eyes and a colorless
complexion. In character, he was nervous and
timid, he detested controversy, and he allowed
others to take credit for things he has done
More Interesting Facts:
In 1810, Joseph Louis Lagrange was only able to
complete two-thirds of the Méchanique
analytique before his death.
Lagrange published 2 volumes of his calculus
Lagrange’s nervous system was put on too much
pressure and the doctors said that they would not
be responsible for certain illnesses. They
recommended for him to rest. In 1813, he died in
Picture of the mathematician:
Pictures of Inventions:
3 = 12 + 12 + 12 + 02
31 = 52 + 22 + 12 + 12
310 = 172 + 42 + 22 +
Calculus Of An example of the
Variations four square