For example , given this function -
$f(x) = x^3-x^2-x-1$
and I want to check it in the point $x=1.6$.
What should I have to write in the command line of wolframalpha in order to get it ?
seems to work. Here is the link. Here is an image:
You could do it like this:
However, you could also do a table like this: