
#1
Feb1709, 11:17 AM

P: 2

i want to plot these equations in 3d
Eq 1= 5x^2  2y^2 + 4x+ 4y 4 +2xy Eq 2 =x^2 +3x +2y +xy +5 eq 3 = 7x2 +3x 6y +5xy +2 i tried plot3 with 3 matix of x,y,z but i am not satisfied with the result. plz if any one know how to plot these equations.let me know thanks in advance 



#2
Feb1709, 04:43 PM

P: 1,672

What kind of plot are you trying to make? I'm going to assume a surface plot since you didn't specify. Here is an example using the "surf" command.
x = 1:1:100; y = 1:1:100; [X,Y] = meshgrid(x,y); Z = X.^2.*Y.^3; surf(X,Y,Z) 



#3
Feb1809, 12:22 AM

P: 2

wel these 3 equations will represent 3 coordianted of plot(x,y,z)
combine plot of these equation. i have tried ezsurf('5*x.^2  2*y.^2 + 2*(x.*y) + 4*y + 4*x 4' ,'x.^2 +3*x +2*y +x*y +5 ','7*x.^2 +3*x 6*y +5*(x.*y) +2 '); thats work 



#4
Jun2609, 03:28 AM

P: 1

3d plot in matlab
Hi, I have 3 vectors of the same dimensions and want to plot a graph in 3D as surface or volume. I tried but I couldn't. Any body knows?
Vectors arr: A=[2 5 15 25 30] B=[0.1 0.2 0.5 0.9 1.0] C=[1870 1890 1920 2000 2050] thanks, PK 



#5
Mar311, 05:13 AM

P: 3

for this one u can use this, also mention the x and y values, ie starting and ending as x=1:10; y=1:10; surf(x,y,Eq 1); surf(x,y,Eq 2); surf(x,y,Eq 3); 



#6
Mar311, 05:39 AM

P: 3





#7
Mar311, 05:44 AM

P: 3

as plot3(A,B,C); 


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