Equation involving the psi function

363 Views Asked by At

I am trying to solve the following equation, and I can't simplify it even further. Is there any approximation or solution to this equation? $$\psi(r)+r\psi'(r)=\log r + 1$$ where $\psi$ is the Digamma function and $\psi'$is its derivative, and $r$ is a postive integer.