# Wolframalpha - how to get value of function in a specific point?

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 ?

The input

 evaluate x^3-x^2-x-1 at 1.6


seems to work. Here is the link. Here is an image:

please compute x^3-x^2-x-1 at x=1.6


did the work for me.

• Indeed. I removed the "please" and it did not work :) – Lord Soth Apr 1 '13 at 23:43
• It's rather charming to see such an insistence on manners. – mikoyan Aug 25 '13 at 9:30

You could do it like this:

http://www.wolframalpha.com/input/?i=evaluate+x%5E3-x%5E2-x-1+at+x+%3D+1.6

However, you could also do a table like this:

http://www.wolframalpha.com/input/?i=Table%5B%28x%5E3-x%5E2-x-1%29%2C+%7Bx%2C+0%2C+16%2C+1.6%7D%5D

"evaluate x^3-x^2-x-1 at x=1.6" works for me.