Simpson公式(n=2) 因为C)=1c(42,1 所以f(x)x=S门+R3/门 atb 且S/=-(f(a)+4f(-)+f(b) (b f(2)5∈(a,b) 2880◼ Simpson公式(n=2) ( ) ( , ) 2880 ( ) [ ] ) ( )) 2 ( ( ) 4 ( 6 [ ] ( ) [ ] [ ] 6 1 , 6 4 , 6 1 (4) 5 (2) 2 (2) 1 (2) 0 f a b b a R f f b a b f a f b a S f f x dx S f R f C C C S b a S  − = − + + + − = = + = = =    且 所以 因为