Functions obtained by integration

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Gamma function obtained by integration
Gamma function obtained by integration
Gamma function obtained by integration
Calculates "Gamma function Γ(a)" by the Double Exponential(DE) integration.
Beta function obtained by integration
Beta function obtained by integration
Beta function obtained by integration
Calculates "Incomplete beta function Bx(a,b)" by the Gauss-Legendre quadrature. "Complete beta function B(a,b)" can be obtained by "x=1".