Integration with Square Roots
Calculus
Level
3
Given that \(\displaystyle \int_0^4 x^3\sqrt{9+x^2} dx = a\), what is the value of \(\lfloor a \rfloor\)?
Details and assumptions
Greatest Integer Function: \(\lfloor x \rfloor: \mathbb{R} \rightarrow \mathbb{Z}\) refers to the greatest integer less than or equal to \(x\). For example \(\lfloor 2.3 \rfloor = 2\) and \(\lfloor -3.4 \rfloor = -4\).
by
Arron Kau