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gradients.m
gradients.m 305 B
clear all
clf
tx = ty = linspace (-2, 2, 21)';
[xx, yy] = meshgrid (tx, ty);
% tz = xx.^2 + yy.^2;
tz = xx.^2 + 4*yy.^3-12*yy-2;
surf(tx, ty, tz)
xlabel("x")
ylabel("y")
zlabel("f(x,y)")
hold on
% [x, y] = meshgrid (-2:0.2:2);
% h = quiver (x, y, 2*x, 2*y);
% set (h, "maxheadsize", 0.33);
% hold off