asec
asec(X) returns the inverse secant, expressed in radians, for each element of X.
Examples
> x = (1:0.2:10)'
[x:46x1 double]
> plot([-x x], [asec(-x) asec(x)], struct('colors', {'blue'}))
[ans:1x1 struct]
Resources
> x = (1:0.2:10)'
[x:46x1 double]
> plot([-x x], [asec(-x) asec(x)], struct('colors', {'blue'}))
[ans:1x1 struct]