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    %% Graph the Inverse Secant
% Graph the inverse secant over the domains $1 \le x \le 5$ and $-5 \le x
% \le -1$.
%%

% Copyright 2015 The MathWorks, Inc.


x1 = -5:0.01:-1;
x2 = 1:0.01:5;
plot(x1,asec(x1),x2,asec(x2)), grid on