Divergence and flux from graphs Consider the following vector fields, the circle C, and two points P and Q. a. Without computing the divergence, does the graph suggest that the divergence is positive or negative at P and Q? Justify your answer. b. Compute the divergence and confirm your conjecture in part (a). c. On what part of C is the flux outward? Inward? d. Is the net outward flux across C positive or negative? 22. F = ( x, y 2 )
Divergence and flux from graphs Consider the following vector fields, the circle C, and two points P and Q. a. Without computing the divergence, does the graph suggest that the divergence is positive or negative at P and Q? Justify your answer. b. Compute the divergence and confirm your conjecture in part (a). c. On what part of C is the flux outward? Inward? d. Is the net outward flux across C positive or negative? 22. F = ( x, y 2 )
Divergence and flux from graphsConsider the following vector fields, the circle C, and two points P and Q.
a. Without computing the divergence, does the graph suggest that the divergence is positive or negative at P and Q? Justify your answer.
b. Compute the divergence and confirm your conjecture in part (a).
c. On what part of C is the flux outward? Inward?
d. Is the net outward flux across C positive or negative?
22. F = (x, y2)
Quantities that have magnitude and direction but not position. Some examples of vectors are velocity, displacement, acceleration, and force. They are sometimes called Euclidean or spatial vectors.
Write an equation for the graph shown below.
5
4
3
2
1
-5-4-3-2-1
-1
1 2 3 4 5
f(x) =
-2
-3
-4
-5
1. We want to graph the function
f(x) log4 x. In a table below,
=
find at three points with nice
integer y-values (no rounding!) and
then graph the function at right. Be
sure to clearly indicate any
asymptotes. (4 points)
3
2
1-
-1
0
1
2
3
4 5
10
X
log4(x)
-1
-2
-3-
6 7
8
00
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