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Activity 9.7.2.

Each equation below is a cylinder surface in $\R^3\text{.}$ To sketch the cylinder surfaces in $xyz$-space, you should first draw the generating curve in the $xy$-plane, $xz$-plane, or $yz$-plane (depending on which two variables appear in the equation) and then then sketch a three-dimensional cylinder surface by thinking about how the rulings will run.

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