Hi, I am trying to make an implicit 3D plot in Matlab. A Matlab Help page says to use the following (as an example):

f = @(x,y,z) x.^2 + y.^2 – z.^2;
interval = [-5 5 -5 5 0 5];
fimplicit3(f,interval)

This works fine. But if I try to complicate things a bit by changing f to:
f = @(x,y,z) x.^2 + y.^2 – z.^2 + x.*y.

then I get the error message "Error: Invalid expression. Check for missing or extra characters".

Any idea what the problem is?

Thank you!Hi, I am trying to make an implicit 3D plot in Matlab. A Matlab Help page says to use the following (as an example):

f = @(x,y,z) x.^2 + y.^2 – z.^2;
interval = [-5 5 -5 5 0 5];
fimplicit3(f,interval)

This works fine. But if I try to complicate things a bit by changing f to:
f = @(x,y,z) x.^2 + y.^2 – z.^2 + x.*y.

then I get the error message "Error: Invalid expression. Check for missing or extra characters".

Any idea what the problem is?

Thank you! Hi, I am trying to make an implicit 3D plot in Matlab. A Matlab Help page says to use the following (as an example):

f = @(x,y,z) x.^2 + y.^2 – z.^2;
interval = [-5 5 -5 5 0 5];
fimplicit3(f,interval)

This works fine. But if I try to complicate things a bit by changing f to:
f = @(x,y,z) x.^2 + y.^2 – z.^2 + x.*y.

then I get the error message "Error: Invalid expression. Check for missing or extra characters".

Any idea what the problem is?

Thank you! plot MATLAB Answers — New Questions

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