Find and Determine Where H Is Continuous

Q47: Find the directional derivative of the function

Q48: If <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5971/.jpg" alt="If use

Q49: Find the shortest distance from the point

Q50: Find the domain and range of the

Q51: Find the first partial derivatives of the

Q53: Use polar coordinates to find the limit.

Q54: How many nth-order partial derivatives does a

Q55: If <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5971/.jpg" alt="If and

Q56: Find the first partial derivatives of the

Q57: Find equations for the tangent plane and