how to plot the gradient of a equation having specific region?

1 次查看（过去 30 天）
Muhammad
Muhammad 2022-10-18
回答： Star Strider 2022-10-18
hello i have the equation
f(x,y)=-5x^3+4yx+6y^3+1
the gradient with respect to x is
f(x)=-15*x^3+4*y
how to plot the gradient having area
-2<x<2, -2<y<2

请先登录，再回答此问题。

回答（2 个）

Torsten
Torsten 2022-10-18
Ran in:
x = -2:0.1:2;
y = x;
[X,Y] = meshgrid(x,y);
f = @(x,y) -15*x.^2+4*y;
surf(X,Y,f(X,Y))
Star Strider
Star Strider 2022-10-18
Ran in:
Perhaps this —
syms x y
f(x,y)=-5*x^3+4*y*x+6*y^3+1
f(x, y) = 
Gf = gradient(f,x)
Gf(x, y) = 
figure
fsurf(Gf, [-2 2 -2 2])
xlabel('X')
ylabel('Y')
.

类别

在 Help Center 和 File Exchange 中查找有关 Surface and Mesh Plots 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by