Sech

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Sech


Hyperbolic secant function



Syntax


Sech(x)

x is scalar

Return a scalar which is the hyperbolic secant function of x, where x is in radian unit


x is matrix

Return a matrix in which the element is the hyperbolic secant function of the element in x, where x is in radian unit


Example


Input

Output

sech(PI)

sech(1+i)

sech([1+i, 0, 1-i])

sech([i, 1-3i; -2i, 5])


See Also


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