Question Number 140249 by ghoku last updated on 05/May/21
$$\underset{\mathrm{0}\:} {\overset{\mathrm{1}} {\int}}\underset{\mathrm{0}\:} {\overset{\mathrm{2}} {\int}}\left({k}\overset{\mathrm{2}} {{z}}+{y}\right){dxdy}=\mathrm{9}\:{k}=?? \\ $$
0-1-0-2-kz-2-y-dxdy-9-k-