# "I am Back" says Integration Part 4

**Calculus**Level 5

\[I=\displaystyle \int _{ 0 }^{ \pi /2 }{ \log(\cos(x))\ \log^ 2 (\sin(x)) \ \mathrm d x } \]

If \(16I\) can be represented in the form of \( a\pi \zeta(b) - c\pi\log^d (f) \)

Find \(a+b+c+d+f\)

**Details and Assumptions**

\(a,b,c,d,f\) are positive integers not neccasarily distinct.

\( \zeta \) denote the Riemann Zeta Function.

\(\log\) is the natural logarithm.

\(f\) is not a multiple of a perfect power of any integer greater than \(1\).