def Product(self, a, b):
     if typeFunction(a) == True and typeFunction(b) == True:
         self.result = product(a, b)
         return self.result
 def Division(self, a, b):
     if typeFunction(a) == True and typeFunction(b) == True:
         self.result = division(a, b)
         return self.result
 def SquareRoot(self, a):
     if typeFunction(a) == True:
         self.result = squareRoot(a)
         return self.result
 def square(self, a):
     if typeFunction(a) == True:
         self.result = square(a)
         return self.result
 def subtract(self, a, b):
     if typeFunction(a) == True and typeFunction(b) == True:
         self.result = subtraction(a, b)
         return self.result
 def add(self, a, b):
     if typeFunction(a) == True and typeFunction(b) == True:
         self.result = addition(a, b)
         return self.result