# Too Difficult? 4

Calculus Level 4

$\large \int_0^1 \dfrac{\ln(x+1)}{x^2+1} \, dx = \ln \left ( \sqrt[a]{b^\pi} \right)$

If the equation above holds true for positive integers $$a$$ and $$b$$, find the minimum value of $$a+b$$.

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