Question

Whta is principle of argument

Answer 1

he argument principle (or Cauchy's argument principle) relates the difference between the number of zeros and poles of a meromorphic function to a contour integral of the function's logarithmic derivative.

Answer 2

Answer:

The principal value of the argument (sometimes called the principal argument) is the unique value of the argument that is in the range −π<argz≤π ⁡ z ≤ π and is denoted by Argz .