www.gusucode.com > symbolic 源码程序 matlab案例代码 > symbolic/Plot3DImplicitSymbolicFunctionExample.m

    %% Plot 3-D Implicit Symbolic Function
% Plot the hyperboloid specified by the function $f(x,y,z) = x^2 + y^2 - z^2$. The |fimplicit3| function plots over
% the default interval of  $[-5, 5]$ for $x$, $y$, and $z$.

syms f(x,y,z)
f(x,y,z) = x^2 + y^2 - z^2;
fimplicit3(f)