Describe Cauchy Riemann Equations
The Cauchy Riemann equations consist of a system of two partial differential equations which together form a necessary and sufficient condition for a complex function to be complexly differentiable that is holomorphic with a certain continuity and differentiability criteria.
The Cauchy–Riemann equations on a pair of real-valued functions of two real variables
are the two equations.
It is given by or
are taken to be the real and imaginary parts respectively.