1) Evaluate $\iint_{(S)}ydS$, (S) is the part of the paraboloid $y = x^2 + z^2$ that lies inside the cylinder $x^2 + z^2 = 4$
2) Evaluate $\iint_{(\sigma)}\overrightarrow{F}.dS$ ($\overrightarrow{F}$ is a vector field and $(\sigma)$ is the oriented surfaces):
$\overrightarrow{F}(x,y,z)=x\overrightarrow{i}-z\overrightarrow{j}+y\overrightarrow{k}$, $(\sigma)$ is the part of the sphere $x^2 + y^2 + z^2 = 4$ in the first octant, with orientation toward the origin.
Bài viết đã được chỉnh sửa nội dung bởi hoangvipmessi97: 30-11-2016 - 00:42
