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Spherical Bessel function of the second kind and its respective derivative

Usage

ys(l, n)

ysd(l, n)

ysdd(l, n)

Arguments

l

An integer or fractional order

n

A complex or real argument

Value

Calculates the spherical Bessel function of the second kind (ys) and its first (ysd) and second (ysdd) derivatives.

References

Amos D.E., "AMOS, A Portable Package for Bessel Functions of a Complex Argument and Nonnegative Order", http://netlib.org/amos