How to solve quadratic equation in x and y?

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laura bagnale
laura bagnale 2021-10-7
评论： Star Strider 2021-10-8
Hello everyone,
Could someone help me, please?
I would like to solve this quadratic equation:
f(x,y) = 3x^2 - 6y^2 + 1
and plot it in the 3D space. For the surface in the space I would like to have the x, y couples of data.
Thank you very much
Laura

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Star Strider
Star Strider 2021-10-7
Ran in:
I am not certain what solve is in this context.
Plotting the function is straightforward —
syms x y
f(x,y) = 3*x^2 - 6*y^2 + 1
f(x, y) = 
figure
fsurf(f, [-5 5 -5 5])
.
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laura bagnale
laura bagnale 2021-10-8
Thank you very much for your reply, Star Strider.
Sorry, I was unclear.
I meant f(x,y) = 3*x^2 - 6*y^2 + 1 == 0, so I need to find the couple (x,y), real, that very this equation.
Thank you a lot
Laura

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