Question 8 (20 points) Parts (a) and (b) are distinct from e…

Question 8 (20 points) Parts (a) and (b) are distinct from each other. (a)  Use Stokes’ Theorem to evaluate \(\displaystyle \iint_S \text{curl} \vec{G} \cdot d\vec{S}\), where \(\vec{G}(x,y,z)= \langle yz, xy, xz \rangle\) and \(S\) is the part of the sphere \(x^2+y^2+z^2=4\) with \(x \geq 0\) oriented in the direction of the positive x-axis that lies inside the cylinder \(y^2+z^2=1\). (b) Consider the solid region E bounded below by the cone \(z=\sqrt{x^2+y^2}\) and above by the paraboloid \(z=2-(x^2+y^2)\). Use the Divergence Theorem and cylindrical coordinates to evaluate \(\displaystyle \iint_S \vec{F} \cdot d\vec{S}\), where \(\vec{F} (x,y,z)= (5x\sin^2(z)+\arctan(y))\vec{i}+(5y\cos^2(z)-\ln(1+x^2))\vec{j}+(7z-e^{x-y})\vec{k}\), and S is the boundary of the region E.