Determine Where the Function Is Continuous

Q95: Evaluate the gradient of f at the

Q96: Find equations for the tangent plane and

Q97: Find <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5971/.jpg" alt="Find ,

Q98: Find the equation of the tangent plane

Q99: Use Lagrange multipliers to find the maximum

Q101: Use differentials to estimate the amount of

Q102: Find the second partial derivatives of the

Q103: Use the definition of partial derivatives as

Q104: Describe the level surfaces of the function

Q105: Find all the saddle points of the