Question $4$:

$4\mathrm{.}1$ Consider the table of term frequencies for $3$ documents denoted Doc$1,$ Doc$2,$ Doc$3$ in Table $2.$ Compute the tf$-$idf weights for the terms car, auto, insurance, best, for each document, using the idf values from Table $1.$

$\backslash$table$[[$Table $1],[$term$,d{f}_t,id{f}_t$