Express the polar equation \(r=\cos 2\theta\) in rectangular coordinates. Find the maximum height above the \(x\)-axis of the cardioid \(r=1+\cos \theta\text{.}\) Sketch the graph of the curve whose ...

Normally in November the Arctic would be well into its annual freeze, and Antarctic melt would be just beginning. In fact, right around now is typically the annual high point for global ice cover. Not ...