The answer to this question is more complicated than might appear. First, Euler's formula, eix = cosx + i*sinx was known before Euler. For example Cotes discovered that ln(cosx + isinx) = ix. Taking natural antilogs gives Euler's formula. Cotes published in 1714 when Euler was aged only 7.
Second, there is no record that shows that Euler simplified his formula and derived the identity that bears his name.
Having said all that, Euler "discovered" the formula in 1740 and published its proof in 1748.
Incidentally, I consider it to be the most beautiful formula EVER.
The Euler characteristic.
It is Euler's number which is the base of natural logarithms.
-1. This is a result of Euler's formula.
e isn't a number, its a mathematical constant. It is sometimes called Euler's number after the mathematician Leonhard Euler.
Euler's numberThe mathematical constant 'e' (base of the natural logarithm) was discovered by Leonhard Euler. Which explains why the number 'e' is sometimes referred to as Euler's number (not Euler's constant, which is a completely different thing).Euler did not discover e although many believe he did. Roger Cotes discovered e.
Euler's formula is important because it relates famous constants, such as pi, zero, Euler's number 'e', and an imaginary number 'i' in one equation. The formula is (e raised to the i times pi) plus 1 equals 0.
The Euler characteristic.
The largest prime number found using Euler's formula, known as Euler's prime, is 2^2^5 + 1, which equals 4294967297. This number was discovered by Euler in the 18th century, and it remained the largest known prime for many years.
Leonhard Euler was of Swiss decent. He was born and raised around Basel, Switzerland. Euler lived most of his life in Switzerland and Russia with some time in Prussia.
It is Euler's number which is the base of natural logarithms.
-1. This is a result of Euler's formula.
e isn't a number, its a mathematical constant. It is sometimes called Euler's number after the mathematician Leonhard Euler.
Because Euler proved it! (No, I can't!)
Euler's numberThe mathematical constant 'e' (base of the natural logarithm) was discovered by Leonhard Euler. Which explains why the number 'e' is sometimes referred to as Euler's number (not Euler's constant, which is a completely different thing).Euler did not discover e although many believe he did. Roger Cotes discovered e.
Euler was a prolific mathematician who answered a large number of questions. You will need to be more specific.
There is no answer to the question as it appears. Faces + Vertices = Edges + 2 (The Euler characteristic of simply connected polyhedra).
Euler