[问答题]
The function f is defined by+ 335lk2yyil; 1hnks7oi nk(wv lh/j ga e-ksxi r6fa5hpufh t t);y.v,p9+4q $f(x)=\frac{7x-24}{x-2}$, for −3≤x≤12,x≠2.
1.Find the range of f.
2.Find an expression for the inverse function $f^{−1}(x)$.
3.Write down the range of $f^{−1}$.