∫0∞x2⁢n⁢ⅇ-12⁢x2⁢Ln(n-12)⁡(12⁢x2)⁢cos⁡(x⁢y)⁢ⅆ⁡x=12⁢π⁢y2⁢n⁢ⅇ-12⁢y2⁢Ln(n-12)⁡(12⁢y2).