∫012⁢πJ2⁢ν⁡(2⁢z⁢cos⁡θ)⁢cos⁡(2⁢μ⁢θ)⁢ⅆ⁡θ=12⁢π⁢Jν+μ⁡(z)⁢Jν-μ⁡(z),