1.设 (x)=(x)^4-3(x)^3+(x)^2-10 _(0)=1 _(1)=2 _(2)=3 _(3)=0.-|||-(1)写出f(x)以x0,x1,x2,x3为节点的3次Lagrange插值多项式L3(x);-|||-(2)写出f(x)以x0,x1,x2,x3为节点的3次 Newton 插值多项式N3(x);-|||-(3)给出以上插值多项式的插值余项表达式.