Let f(x) be a polynomial of unknown degree taking the values
| x | 0 | 1 | 2 | 3 |
| f(x) | 2 | 7 | 13 | 16 |
All the fourth divide differences are -1/6. Then the coefficient of x3 is
1
1/3
2
-2/3
3
16
4
-1
Let f(x) be a polynomial of unknown degree taking the values
| x | 0 | 1 | 2 | 3 |
| f(x) | 2 | 7 | 13 | 16 |
All the fourth divide differences are -1/6. Then the coefficient of x3 is