In this problem, we will think of a polynomial as an immutable object, represented internally as a tuple of coefficient-power pairs. for instance, the polynomial 2x+1 would be represented internally by the tuple ((2, 1), (1, write an initialization method , polynomial) that converts the input sequence polynomial of coefficient-power pairs into a tuple and saves it for future use. also write a corresponding method get_polynomial(self) that returns this internal representation.