import math
print("\nMath:", dir(math))
print("copysign:", math.copysign(10, -2))
print("copysign:", math.copysign(-10, 1))
print("Exp:", math.exp(6))
print("Expm1:", math.expm1(6))
print("Log:", math.log(10, 10))
print("Log10:", math.log10(12))