Mathematica applies its strengths in calculus to the intricacies of integral transforms, with a host of original algorithms that probably now reach almost any closed form ...
SinhIntegral[z] gives the hyperbolic sine integral function Shi(z).
SinIntegral[z] gives the sine integral function Si(z).
ExpIntegralEi[z] gives the exponential integral function Ei(z).
ExpIntegralE[n, z] gives the exponential integral function E_n (z).
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Unicode: 2232. Alias: Esc ccint Esc. Compound operator. ∲ f x is by default interpreted as ClockwiseContourIntegral[f,x].