Using the Lagrange method to find the polynomial that interpolates the points:
f(x) | -3 | -2 | -1 | 0 | 1 |
x | -197 | -35 | -1 | 1 | 5 |
I find:
So I got the following polynomial:
Is this correct what I did?
You need to show your work. If you don't do that, we can't help you very much. Here's a page on the Lagrange Interpolating Polynomial.