%% Plot Implicit Symbolic Function
% Plot the hyperbola described by the function f(x,y) = x^2 - y^2  - 1 by first declaring the symbolic function f(x,y) using syms. The fimplicit function uses the default interval of  [-5, 5] for x and y.

syms f(x,y)
f(x,y) = x^2 - y^2 - 1;
fimplicit(f)

% Copyright 2012 The MathWorks, Inc.