- #1

karush

Gold Member

MHB

- 3,269

- 5

\begin{align*}\displaystyle

DV_{22}&=\int_{0}^{2\pi}\int_{0}^{\pi/4}\int_{0}^{2}

\, (\rho \cos \phi) \rho^2 \sin \phi

\, d\rho \, d\phi \, d\theta \\

%&=\color{red}{abc}

\end{align*}

so then next ?

\begin{align*}\displaystyle

DV_{22}&=2\pi\int_{0}^{\pi/4}\int_{0}^{2}

\, (\rho \cos \phi) \rho^2 \sin \phi

\, d\rho \, d\phi \,

\end{align*}

no book answer