import math

x = 3.265

print('x =', x)
print('trunc(x) =', math.trunc(x))
print('floor(x) =', math.floor(x))
print('ceil(x) =', math.ceil(x))

print()

x = -3.265

print('x =', x)
print('trunc(x) =', math.trunc(x))
print('floor(x) =', math.floor(x))
print('ceil(x) =', math.ceil(x))

print()

print(math.pi)
print(math.e)

print(math.sin(math.pi / 4))

print(1 / math.sqrt(2))
