Example 1.6. Consider the graph y(x) cos(x) over [0.0, 1.2]. (a) Use the nodes xo=0.0andx1=1.2 to construct linear interpolating polynomial Pi(). (b)Use the nodes xo 0.2 and x =1.0 to construct a linear approximating polynomial()
第三章解线性方程组的直接法 Direct Method for Solving Linear Systems 求解A=万 1高斯消元法Gaussian Elimination*1 高斯消元法思首先将A化为上三角阵l*uper--triangular matrix*1路,再回代求解l* backward substitution*1