Using the surf and meshgrid command

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i am trying to plot a function using the surf and meshgrid commands
use the meshgrid and surf commands to plot y = sin(x cos(z)))
this is the code i have so far im not sure how to continue using the surf command and what is wrong with my current code
x = linspace(-1,1);
y = linspace(-1,1);
[x,y] = meshgrid(x,y);
y = sin*(x cos(z))
Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error. To construct matrices, use brackets instead of parentheses.

Accepted Answer

Star Strider
Star Strider on 25 Mar 2023
I am not certain what function you want to plot, since you did not create ‘z’ as a separate matrix. (I am creating it here in place of matrix ‘y’.
Since this is a bit ambiguous, two options —
x = linspace(-1,1, 50);
z = linspace(-1,1, 50);
[x,z] = meshgrid(x,z);
y = sin(x.*cos(z));
figure
surf(x, y, z)
colormap(turbo)
figure
surf(x, z, y)
colormap(turbo)
.
  3 Comments
Matt J
Matt J on 26 Mar 2023
@lateef Well, you've had quite a few homework hints, so perhaps you should carry the ball from here...
Star Strider
Star Strider on 26 Mar 2023
@lateef — This should work, then.
I am just not certain what is to be plotted, or how it is to be plotted, since ‘z’ is not specifically defined anywhere.

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More Answers (1)

Catalytic
Catalytic on 25 Mar 2023
Use fimplicit3 instead
fimplicit3(@(x,y,z) y - sin(x.* cos(z)) ,[-1,1] )
  1 Comment
lateef
lateef on 26 Mar 2023
per my instructor i am supoosed to use the surf and meshgrid commands

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