What are the applications of Euler's equation?
Euler's formula can also be used to provide alternate definitions to key functions such as the complex exponential function, trigonometric functions such as sine, cosine and tangent, and their hyperbolic counterparts. It can also be used to establish the relationship between some of these functions as well.
What is the derivation of the Euler equation?
Euler's equations are derived from the Navier-Stokes equations or from basic equations in continuum mechanics. Although Euler's equations consider a somewhat impossible physical situation of zero viscosity, they are useful for describing low-viscosity fluids like water or alcohols.