[Fractint] Another series derivative

This is the first derivative of the iteration z= sin(z) + c . I'm standardizing the variables , z for series , u for first derivative, v for second derivative. d1cos(XAXIS){; Edward Montague ; (c) Copyright 2016 ; ; z = sin(z) + c ; 1st derivative of z series = u. ; c = Pixel z = c u = 1 u0 = u: u = cos(z)*u + u0 z = sin(z)+c |u| < 10000 }