Bi⁡(x)=x5/4⁢ⅇ(2/3)⁢x3/225/2⁢π⁢⨍0∞t-1/2⁢ⅇ-(2/3)⁢t3/2⁢Ai⁡(t)x3/2-t3/2⁢ⅆ⁡t,