31. Viviani's Curve C is the intersection of the surfaces (Figure 12) SHOTTOMU1 030 SECTION 14.1 Vector-Valued Functions 749 x2 + 12 = 2 2. y = 22 (a) Separately parametrization the two parts of C corresponding to In Exercises 36-38, two paths ri(t) and r2(1) intersect if there is a point P x 2 0 and x