1. Compute the curvature of the following arclength-parametrized curves: a. a(s) = (coss, coss, sin s) ・ b. a(s)=(1+s², ln(s + √√1+s²)) *c. a(s) = ((1+s)³/2, (1 − s)³/2, s), s€ (-1,1) S