Area problem regarding [tex]r^2=8cos(2θ)[/tex] and some other curve. I don't understand how to plot this. I started off with a table of values. I get confused when [tex] θ = π/2[/tex]. I thought it would give [tex]r^2 = -8[/tex]. But looking at mathematica it gives a leminiscate that crosses the origin. How come? Is it because it would give imaginary values? Should I even take the square root? I was doing fine when it was just r = whatever. Thanks.