 
 
 
Gamma takes as argument a number a.
Gamma returns the value of the Γ function in a, defined by :
| Γ(x)= | ∫ | 
 | e−ttx−1dt, if x>0 | 
If x is a positive integer, Γ is computed by applying the recurrence :
| Γ(x+1)=x*Γ(x), Γ(1)=1 | 
Hence :
| Γ(n+1)=n! | 
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Indeed : Gamma(0.7)=-0.3*Gamma(-0.3)
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Indeed Gamma(0.7)=-0.3*Gamma(-0.3)=(-0.3)*(-1.3)*Gamma(-1.3)
 
 
