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# Carlos Guerrero García

Last seen: 5 days ago Active since 2022

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sketch the graph of the function: f(x,y)= 1+2x^2+2y^2
The usage of polar coordinates must be useful: [rho,theta]=meshgrid(0:0.1:2,0:pi/60:2*pi); x=rho.*cos(theta); y=rho.*sin(thet...

2 months ago | 0

How do I plot the following function? (I don't have syms function either)
I recommend the usage of the commando called "plot3" r= ... % range for r ux =0.*r % ux must be a vector uy = -0.125.*r+1.125...

2 months ago | 0

how can I use partfrac command?
I suggest the following code: syms s; laplace(ilaplace((8*s^2+37*s+32)/((s+1)*(s+2)*(s+4))))

2 months ago | 0

Draw 3D object.write code in 2016a version. Help me,thanks!
Is the same question that https://es.mathworks.com/matlabcentral/answers/430986-draw-3d-object-code-this-in-2016a-version-help?...

2 months ago | 0

Draw 3D object. code this in 2016a version.help!
Is this the same question that https://es.mathworks.com/matlabcentral/answers/430684-draw-3d-object-write-code-in-2016a-version...

2 months ago | 0

How to draw D in 3D ?
There is a wrong sign in the KSVV isolation of z in the first equality, and so, the D1 definition must be D1=(4-X^2-Y^2).^0.5 ...

2 months ago | 0

Problem in x and y trajectory.
After the first (x,y,z)=(1,0,1) assignment, the lines before velocity states (X,Y,Z)=(-10,-280; 280-8/3)=(-10,-280,832/3), and s...

2 months ago | 0

How can I graph the following parametric functions on a 3d graph?
And...what about an animation? [THETA,PHI]=meshgrid(0:2*pi/60:2*pi,0:pi/60:pi); for R=0.1:0.01:2; mesh(R.*cos(THETA).*sin...

2 months ago | 0

scatter3 plot to a mesh plot or surface plot
I don't know what kind of surface do you want to add...perhaps something like this??? x = [0 -9 9 0 -9 9 0 -9 9 0 -9 9 0 -9 9];...

2 months ago | 0

how do you graph z=sqrt(9-r^2cos^2(theta))?
I think that Carter Pennington was talking about the parametrized surface x=r*cos(theta) y=r*sin(theta) z=sqrt(9-r^2*(cos(the...

2 months ago | 0

How do I plot x^2+z^2=9 above the xy plane and between y=-1 and y=2?
The z definition z=sqrt(9-x^2) is not for the below part of the surface. I prefer not using symbolic variables for the represent...

2 months ago | 0

Integral for the outer surface area of the part of hyperboloid formed by a hyperbola
Here I post the graph of the two-sheet hyperboloid, using the following lines. I hope it will be useful for another surface of r...

2 months ago | 0

Problems with truncated top of the graph
In the line axis([0 6000 0 6000 0 2500]) delete the limits in the z-axis, i.e. use the following line instead: axis([0 6000 0...

2 months ago | 0

| accepted

integral2 error, bu the function works
A sketch of the function: [x,y]=meshgrid(0:0.01:1); % The region in the statement surf(x,y,1-exp(-0.01*abs(x-y))); % Plotting ...

2 months ago | 0

Integral2 Error message
syms x y; int(int(x/y+y/x,1,2),1,4) vpa(ans)

2 months ago | 0

How to fix errors within double integral.
For plotting the region, I suggest the following code: x=-3:0.05:3; % Setting up the range of X y=sqrt(9-x.^2); % Calculating ...

2 months ago | 0

Having problems with this triple integral
The exercise ask for the evaluation using cylindrical coordinates and you're not using cylindrical coordinates in your code. Als...

2 months ago | 0

calculating Double integral over a region
When you define "fun", the variable "aa" is undefined yet. Also, because the variables "x" and "y" doesn't appear in the "fun" d...

2 months ago | 0

Error in the script
If you put the title and then plot without "hold on" you never see the title (swap title and plot instructions), but your error ...

2 months ago | 0

sin(x)^2
Perhaps the following lines will be useful: syms x; % Establishing 'x' as a symbolic variable combine(sin(x)^2,'sincos') % For...

2 months ago | 0

how can I find the surface area and the volume through this code?
The surface which area (and volume) is found, can be visualized using the following code: v =[2;0;1;9;0;1;3;0;1]; % Line in the...

2 months ago | 1

How to plot sin(xy)=sin(x)+sin(y)?
"contour" command provides another way to plot an implicit function defined by an expression like F(x,y)=0. For the implicit fun...

2 months ago | 1

Your goal is not clear for me, but I try to help. Because we can separate the varaibles in both odes, the general solution of th...

2 months ago | 0

| accepted

Find the value of a
Hi Trenton...!!! You can find my suggestion for an animation plot in https://es.mathworks.com/matlabcentral/answers/593245-fin...

2 months ago | 0

Plotting a section of a hemisphere using parametric equations
Another way for changing the theta and/or phi values is theta=[0:pi/36:2*pi]; phi=[0:pi/36:pi/4]; Anyway, I suggest not to cr...

2 months ago | 0

Matlab to LaTeX

2 months ago | 0

how to fix my code and how to find the area of the regon
The area can be found as follows (the explanation can be found in any Calculus text. I think that here is not the right place fo...

2 months ago | 0

How to compute the area of cardioid r=2(1+cosx)
I think that you only need a graph (to be included in the statement of an exercise, example,...) I hope the following code will...

2 months ago | 0