(3):
=[1/3X3-1/3X-(3)] {(X=2)-(X=1)}
=2.625-0
=2.625
(9):
x=[0,1]时
=X-1/2X2 {(X=1)-(X=0)}
=1/2
x=[1,3]
=1/2X2-X {(X=3)-(X=1)}
=3/2-(-1/2)
=2
所以结果为1/2+2=5/2
(12)
X=[-1,0]时
F(X)=1/2X2;
A1=F(0)-F(-1)=-1/2
X=[0,1]
F(X)=1/3X3;
A2=F(1)-F(0)=1
所以:A=A1+A2=1/2
1.6.3
F(X)=X2+KX;
由题可知F(1)-F(0)=2
所以 1+k-0=2
k=-1