Ψ2⁡(0,y)={π/y⁢(exp⁡(14⁢ⅈ⁢π)+o⁡(1)),y→+∞,π/|y|⁢exp⁡(-14⁢ⅈ⁢π)⁢(1+ⅈ⁢2⁢exp⁡(-14⁢ⅈ⁢y2)+o⁡(1)),y→-∞.