www.gusucode.com > symbolic 源码程序 matlab案例代码 > symbolic/GradientVectorExample.m
%% Gradient Vector %% 1 % Copyright 2015 The MathWorks, Inc. syms x y f = -(sin(x) + sin(y))^2; g = gradient(f, [x, y]) %% 2 [X, Y] = meshgrid(-1:.1:1,-1:.1:1); G1 = subs(g(1), [x y], {X,Y}); G2 = subs(g(2), [x y], {X,Y}); quiver(X, Y, G1, G2)