Find the Equation of the Normal Line to the Given

Q69: Find the limit. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5971/.jpg" alt="Find the

Q70: Use spherical coordinates to find the limit.

Q71: The height of a hill (in feet)

Q72: Determine the largest set on which the

Q73: Use the equation <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5971/.jpg" alt="Use the

Q75: A contour map for a function f

Q76: A cardboard box without a lid is

Q77: Find <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5971/.jpg" alt="Find for

Q78: Find <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5971/.jpg" alt="Find for

Q79: Use Lagrange multipliers to find the maximum