
6.9 Modeling with polynomial functions
... 3rd order differences. (you check the 3rd order diffs. because it’s a degree 3 polynomial) • First, write out the first several values; or find f(1), f(2), f(3),…, f(6). • f(1)=6 f(2)=25 f(3)=70 f(4)=153 f(5)=286 f(6)=481 Now subtract #s! (left from right) 1st diffs. 19 ...
... 3rd order differences. (you check the 3rd order diffs. because it’s a degree 3 polynomial) • First, write out the first several values; or find f(1), f(2), f(3),…, f(6). • f(1)=6 f(2)=25 f(3)=70 f(4)=153 f(5)=286 f(6)=481 Now subtract #s! (left from right) 1st diffs. 19 ...