Problem with drawing a function in MATLAB

[Physics_rocks]

hi guys ,

I'm trying to draw the following function , however MATLAB doesn't like my code . What am I doing wrong ?

z = x + (y – 100)^2

where x = -50 : 50,
y = 0 : 200


my code :

[x,y]=meshgrid(-50:1:50,-0:1:200)
surf(x , y , x. + (y.-100)^2)

thank you

 

[matonski]

You have the dots in the wrong place

surf(x , y , x + (y-100).^2)

 

[oswaler]

for your help

Hello,

It looks like you have a few syntax errors in your code. Here are a few suggestions to fix it:

1. In your code, you have a period after the x and y variables in the surf command. This is not necessary and may be causing an error. Try removing the periods and see if that helps.

2. The meshgrid function creates a grid of points, but it expects the input ranges to be in increments of 1. In your code, you have specified increments of 1 for the x values, but for the y values you have specified increments of 1 for the first two numbers (-0:1:200), but then specified increments of 200 for the last number (0:200). This may cause an error. Try using increments of 1 for all three numbers in the y range.

3. The surf function expects three inputs - the x values, the y values, and the z values. In your code, you have only specified the x and y values. You need to also calculate the z values using the equation z = x + (y - 100)^2 and then pass them as the third input to the surf function.

Taking these suggestions into account, your code should look like this:

[x,y] = meshgrid(-50:1:50,0:1:200);
z = x + (y - 100).^2;
surf(x,y,z);

I hope this helps you successfully draw your function in MATLAB. Let me know if you have any further questions or if this does not solve the issue. Keep experimenting and exploring with MATLAB - it is a powerful tool for scientific analysis and visualization. Good luck!