MATLAB: How to “plot” a surface

3dsurfsurface

Hi I have a function 2x+3y+6z=12 and I would like to plot it and to colorize the created figure. How can I do? using surf? meshgrid? plot,

Best Answer

Hint:

[x, y] = meshgrid(.....
% Then solve for z in terms of x and y.
% Then call surf(x,y,z)

It's literally 3 lines of code. You can do it.

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MATLAB: How to plot level curves f(x,y)=yln(x)+xln(y) through point (1,1)

You know what f(x,y) is when x=y=1.

help meshgrid
help contour

So then it is trivial to plot the contour that goes through the indicated point. 3 lines of code. Read the help.

But I won't do your homework. You need to make an effort. I'll make a deal though. If you are willing to seriously try something. Show what you did. Then I'll consider showing you the 3 lines that produced that plot.

MATLAB: Help plotting with simple linespace and surf

You were very close: you only forgot to change x to X and y to Y after you added meshgrid.

x=linspace(0,2*pi);
y=linspace(0, pi);
[X,Y]= meshgrid(x,y);
Z=sin(3*X).^2.*cos(4*Y).^3;
surf(X,Y,Z)

(next time, select your code and click the {}Code button to correctly format your code)

Best Answer

Related Solutions

MATLAB: How to plot level curves f(x,y)=yln(x)+xln(y) through point (1,1)

MATLAB: Help plotting with simple linespace and surf

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