agm -- arithmetic-geometric mean

• Usage:

  agm(x,y)

• Inputs:
  • x, a number
  • y, a number
• Outputs:
  • the arithmetic-geometric mean of x and y

i1 : agm(1,2p200)

o1 = 1.456791031046906869186432383265081974973863943221305590794173

o1 : RR (of precision 200)