asecd

Arguments

x

Real or complex array

y

Real or complex array

Description

Computes the element-wise inverse secant of the argument, results in degree. For real input data with absolute value greater than 1 the results are real and in [-90 90].

asecd(x) is equal to asec(x)*180/%pi.

Sample

Examples

x=[1 2 -2 sqrt(2) -sqrt(2) 2/sqrt(3) -2/sqrt(3) -1];
asecd(x)

See also

• asec — computes the element-wise inverse secant of the argument.
• secd — computes the element-wise secant of the argument given in degree

References

• Kahan, W., "Branch cuts for complex elementary functions, or, Much ado about nothing's sign bit", Proceedings of the joing IMA/SIAM conference on The State of the Art in Numerical Analysis, University of Birmingham, A. Iserles and M.J.D. Powell, eds, Clarendon Press, Oxford, 1987, 165-210.