# 9.1.scm
# 2024-10-12
# $Id: 9.1.py 1.1 2024/11/02 14:03:48 s Exp $

# procedure
def u(x):
    return x **(1/4)

# input 
x = [80e3, 90e3, 100e3, 110e3, 120e3, 130e3, 140e3]

# calculation
eu_x = sum(list(map(u, x))) / len(x)
c =  eu_x ** 4

# output
print("9.1.js")
print( "x ", x)
print("E[U(x)] ",  eu_x)
print("C ", c)
# end