Changes

complexno.py

@@ -31,6 +31,15 @@ class ComplexNumber:
 		rmul_img = self.img*other
 		return ComplexNumber(rmul_real,rmul_img)
 
+	def __sub__(self,other):
+		sub_real = self.real - other.real
+		sub_img = self.real - other.real
+		return ComplexNumber(sub_real,sub_img)
+
+	def __div__(self,other):
+		div_real = (self.real*other.real+self.img*other.img)/(other.real**2+other.img**2)
+		div_img = (self.img*other.real - self.real*other.img)/(other.real**2+other.img**2)
+
 i1 = ComplexNumber(1,1)
 i2 = ComplexNumber(2,0)
 i3 = i1+i2