If I(mn)=int(0)^(1)x^(m-1)(1-x)^(n-1)dx,...

If `I(mn)=int_(0)^(1)x^(m-1)(1-x)^(n-1)dx,(m, n epsilon I, m,n ge 0 )`, then

`I(m,n)=overset(oo)underset(0)int (x^(m-1))/((1+x)^(m+n)) dx=overset(oo)underset(0)int (x^(n-1))/((1+x)^(m+n))dx`

`I(m,n)=overset(oo)underset(0)int (x^(m))/((1+x)^(m+n)) dx=overset(oo)underset(0)int (x^(n))/((1+x)^(m+n))dx`

`I(m,n)=overset(oo)underset(0)int (x^(n))/((1+x)^(m+n-1)) dx=overset(oo)underset(0)int (x^(n))/((1+x)^(m+n-1))dx`

none of these

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