![\boxed{\sf \ \ \ the \ inverse \ of \ f \ does \ not\ exist \ \ \ }](/tpl/images/0703/9429/3e4cd.png)
Step-by-step explanation:
hello,
for one x you cannot get several values of f(x), otherwise this is not a function
as 6 and 7 gives 0 it means that
f(6)=f(7)=0 which is fine for f
but then for
it would mean that 0 has two different images
and this is not possible
so the inverse of f does not exist
hope this helps