Set up the integral for the arc length of the curve y = e* from (0, 1) to (1, e). Set up the integral for the arc length of the curve y = 2e(*-) -1 from (1,1) to (3,2e-1) Without computing the integrals in (a) and (b), use a substitution to show that the arc len obtained in (b) is twice the arc length obtained in (a)