def S(x, n):
s = 0
for i in range(1, n + 1):
s += Power(x, 2 * i)
return s
def S(x, n):
s = 0
for i in range(1, n + 1):
s += Power(x, n) / Factorial(n)
return s
def IsSquare_2(n):
return Power(n, 1/2) == int(Power(n, 1/2))
def S(x, n):
s = 0
for i in range(0, n):
s += Power(x, 2 * i + 1)
return s
def IsSquare(n):
for i in range(1, int(math.sqrt(n))+1):
if Power(i, 2) == n:
return True
return False