Question

The value of 

\[ \int_{0}^{\pi} |\sin^3 x| \, dx \]

is ______.

• A. 0
• B. 3/8
• C. 4/3
• D. [suspicious link removed]

Hint:

Wallis' Formula shortcut for $\int_{0}^{\pi/2} \sin^n x \, dx$: If $n=3$, value is $\frac{2}{3}$. For $\int_{0}^{\pi}$, it is twice that: $4/3$.

Answer 1

The Correct Option is C