MandelbrotSetMemberQ
MandelbrotSetMemberQ[z] returns True if z is in the Mandelbrot set, and False otherwise.
Examples
Check if a point is in the Mandelbrot set:
MandelbrotSetMemberQ[0]
(* True *)MandelbrotSetMemberQ[2 + 2 I]
(* False *)Please visit the official Wolfram Language Reference for more details.