this Swiss mathematician was responsible for instituting the use of the symbol pi in mathematical notation?

Answer 1

Euler

Answer 2

oftentimes William Jones' e book a clean creation to mathematics from 1706 is termed the first textual content the position the Greek letter ? replaced into used for this consistent, yet this notation became effortless particularly considering that Leonhard Euler followed it some years later. Leonhard Euler replaced right into a Swiss mathematician and physicist. he's seen to be between the fantastic mathematicians of all time. Euler replaced into the first to apply the time period "function" to describe an expression concerning distinct arguments; i.e., y = f(x). also he presented lasting notation for undemanding geometric applications including sine, cosine, and tangent.

Answer 3

http://en.wikipedia.org/wiki/Pi#History