How do you find the polynomial funtion that best models data givn in a table for x and f(x). The only example in my testbook shows how to do it on a calculator but I cannot find any instructions with my calculator to tell me how to do it.

Question

The data for x=-5, -4,-3, -2, -1, 0, 1, 2, 3, 4, and 5

The data for f(x)= 4, 0, 0, 0, 0, 1, 1, 0, 0, 1, 4

Thanks.