Analyse a parameterised polynomial family
Let \(P_{t}(x)\) be a family of polynomial functions. The input is \(x\) and the family parameter is \(t\)
\[P_{t}(x)=(-\frac{2}{3}(x+1)(x+\frac{3}{4})(x)(x-\frac{1}{2})^{2})+t\]
The member with \(t=1\) passes through \((-\frac{1}{2},\frac{25}{24})\)