Polynomial implementation approach revisited

[akarshan96]

Apache Math Common provides a range Polynomial functions that can be used to implement polynomials efficiently. A discussion can take place whether we can use this approach or stick to previous one.

[viveksb007]

Great we should switch to Apache Common Math. Just take care of one thing about evaluation in numpy.poly1D polynomial is solved as
poly1d([1, 2, 3]) -> x^2 + 2x + 3
and in Apache Common Math, its evaluated as
3X^2+2X+1
So reverse of coefficients should be given when constructing a polynomial instance in Apache common math.

[viveksb007]

@akarshan96 when can you incorporate Polynomial implementation from apache common math?
#91 Could only be addressed after underlying polynomial implementation is done.