Review Sheet for Test 2

(Sections 15.1-16.5)

15.1     Be able to find the domain and range of a function of several variables.

            Be able to sketch the graph of a function of two variables.

            Be able to sketch level curves and level surfaces.

            Be able to match graphs or level curves with functions.

15.2     Be able to decide whether a limit exists. Be able to justify your conclusions.

            Know the definition of continuity.

15.3        Know how to compute partial derivatives.

            Be able to compute higher order partial derivatives.

            Know ClairautÕs Theorem on p. 952. (You donÕt need to know the proof.)

15.4        Know the equation of a tangent plane. What is a tangent plane?

            Know what the linearization of a function of several variables is.

            No questions about differentials will be asked.

15.5        Know how to use the chain rule.

            Know exactly how to compute d/dt F(x(t), y(t), z(t)).

15.6     Know and UNDERSTAND what a directional derivative is.

            Know how to compute directional derivatives.

            Know and UNDERSTAND the proof of Theorem 15 on page 982.

Know and UNDERSTAND WHY the gradient vector is perpendicular to the tangent plane to a level surface (that is, know and understand the proof on pages 983/984).

            What is the definition of a level surface?

Know how to find the equation of a tangent plane and a normal line to a level surface.

15.7        Know how to find the critical points of a function of two variables.

            What is a critical point?

            Know the second derivative test.

            Know how to find the maximum and minimum values for a function defined on a       bounded and closed region D.

16.1        Know the geometric meaning of double integrals (volume of a solid under the graph of f).

16.2        Be able to do the HW assignments.

16.3        What is a type I (type II) region?

            Know how to change the order of integration. (Use arrows to find the bounding curves.)

            Know how to find the volume of a solid.

Know how to find the area of a two dimensional region.

16.4     Know how to use polar coordinates for double integration.

16.5        Know how to find the mass and the center of mass of a lamina.

 

Make statements on your test. (For instance: Write equal signs whenever you think two expressions are equal.) Use a pencil and write legibly.