Yν⁡(z)=ⅇ±(ν+1)⁢π⁢ⅈ/2⁢Iν⁡(z⁢ⅇ∓π⁢ⅈ/2)-(2/π)⁢ⅇ∓ν⁢π⁢ⅈ/2⁢Kν⁡(z⁢ⅇ∓π⁢ⅈ/2),