对于L2范数下的逼近,我们得到了关于在等距节点处分段线性插值的2个精确不等式,它们是Wasilkowski文章中相应不等式的完善与推广.
For the approximation in L2-norm,we obtain two sharp inequalities which are related to piecewise linear interpolation with equi-distant knots. They are improvement and extension of the corresponding inequality shown in Reference 2.