x_0 = 1 (slider from -10 to 10, step 0.1)
grad = 4 (slider from 0 to 50, step 1)
f = Function(1 / (1 + x^(2)), -50, 50)
TaylorPolynomium = TaylorSeries(f, x_0, grad)
P: (x_0, f(x_0))