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Remember to evaluate the unit vector if you are calculating the directional derivative of a certain function in the direction of a specific vector.
Understand that finding the equation of the tangent plane is no more difficult than doing so for the tangent line in calc 1 as long as you recall the general form of a plane.
Looking at the time stamp you probably already took it. Let us know what you think stumped you so you can better perform on the final. Some of the contents in the first half coincide with the second part, depending on how the course is taught. Partial derivatives do not go away, and neither do vector-valued functions.
t. anon who took calc 3 this past summer with a 6 year gap since calc 2.
