# 1115.py

import math

a=3; b=1.7

def artanh (x): return 0.5*math.log((1+x)/float(1-x))

def f (x): return 0.5*(1+math.tanh(a*artanh(2*x-1)+b))

def g (t): return 1/(1+pow((1-t)/t,a)*math.exp(-2*b))

for k in xrange(1,5): x=k*0.2; print f(x), g(x)