computes the element-wise inverse secant of the argument.
y = asec(x)
a real or complex array.
a real or complex array.
Computes the element-wise inverse secant of the argument. For real argument with absolute value greater than 1 the result is real.
The following equalities hold: asec(z) == -acsc(-z) == asin(1/z) == %pi/2-asec(x) == %i*acsch(%i*z)
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