Barrons AP Calculus

63.

64.

65.

r   2   =   cos 2θ, lemniscate, symmetric   to  the x-axis.

(r  2   =   sin 2θ  is  a   lemniscate  symmetric   to  y   =   x.)

r   =   θ,  (double)    spiral  of  Archimedes

r θ =   a   (θ  >   0), hyperbolic  (or reciprocal) spiral

EXPONENTIAL AND LOGARITHMIC