Question $4$: Lagrangian interpolation: Suppose that we have the following data pairs$-\backslash ($ x $\backslash )-$values and $\backslash ($ f$($x$)\backslash )-$values$-$ where $\backslash ($ f$($x$)\backslash )$ is some unknown function: $1(4\mathrm{.}2)$ Repeat the above question by using Mathematica commands. Give a command to generate the whole interpolation. Present all commands and results generated.