3D vector field trajectory animation
$$ \mathbf F(\mathbf r(t)) = \frac{d\mathbf r}{dt}$$

Wolfram Alpha parametric surface

Final exam material

Section	Homework	Lecture problems
15.3	26, 38, 33, 2, 24	24, 5, 26, 9, 4
15.4	25, 36, 15, 17, 35	35, 4, 42, 21, 7
15.5	2, 24, 51, 45, 44, 54	31, 17, 50, 2, 48, 32
15.6	21, 19, 40, 10, 31	43, 33, 22, 24, 9
15.7	25, 23, 18	3, 2, 17
15.8	8, 28, 14, 32	32, 12, 1, 29

There will be two midterms, on February 17 and March 30. Best midterm counts 45%, homework (dropping two lowest) counts 5%, final exam counts 50%.

Midterm 1 material

Section	Homework	Lecture problems
14.1	11, 26, 3	4, 3, 18
14.2	32, 20, 54, 29, 65, 42, 26, 60	46, 55, 35, 19, 66, 26, 35, 18
14.3	15, 20, 9	20, 7, 3
14.4	10, 35, 21, 25, 11	37, 18, 10, 25, 5
14.5	21, 44, 31, 28, 48, 15	52, 10, 33, 1, 22, 5

Midterm 2 material

Section	Homework	Lecture problems
14.6	38, 14, 29, 25, 12	34, 37, 22, 17, 36
14.7	74, 8, 77, 34, 52, 66, 11, 60, 1	5, 32, 55, 43, 9, 24, 48, 37, 43
14.8	21, 24, 3	11, 6, 14
15.1	22, 4, 11, 24	18, 5, 35, 21
15.2	42, 15, 25, 23, 45, 9	24, 21, 25, 50, 51, 41