The question is shown below, need only part 2. Thank you.

(The question is completed. Do not tag me for incompleteness again.)

EXERCISE 3.110. Let (I be the surface patch in Example 3.25 on page 131 for the surface of revolution generated by 1r 2 (3\"), 21(6)). {1] Classify the choices of '7 for which cr is an isometry. [2] Write the djerential equation that must be satised for 0' to become conformal after replacing 7 with the reparametrization *y o 43-. {3] Repeat ('2) with \"equiareal\" instead of "conformal.\" \f