Id like to ask an expert

P$3.$ Write a Python function to define

$S(x)=\{\begin{array}{ccc}1+1\mathrm{.}466x+0\mathrm{.}25228x^3,& if& 0x<mn>1</mn>\\ 2\mathrm{.}71828+2\mathrm{.}22285(x-1)+0\mathrm{.}75685(x-1{)}^2+1\mathrm{.}69107(x-1{)}^3,& if& 1x<mn>2</mn>\\ 7\mathrm{.}38906+8\mathrm{.}80977(x-2)+5\mathrm{.}83007(x-2{)}^2-1\mathrm{.}94336(x-2{)}^3,& if& 2x3\end{array}$

Save the notebook as WS$1$P$3$

$2$