?? polyinterp.m
字號:
function v = polyinterp(x,y,u)
%POLYINTERP Polynomial interpolation.
% v = POLYINTERP(x,y,u) computes v(j) = P(u(j)) where P is the
% polynomial of degree d = length(x)-1 with P(x(i)) = y(i).
% Use Lagrangian representation.
% Evaluate at all elements of u simultaneously.
n = length(x);
v = zeros(size(u));
for k = 1:n
w = ones(size(u));
for j = [1:k-1 k+1:n]
w = (u-x(j))./(x(k)-x(j)).*w;
end
v = v + w*y(k);
end
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -