Using Green's Theorem, find the outward flux of F across the closed curve C.F = ln (x2 + y2) i + tan-1 
j; C is the region defined by the polar coordinate inequalities 
and 
A. 0
B. 61
C. 22
D. 11
Answer: A
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A container contains a large unspecified number of ping-pong balls. A student takes 80 balls from the container, marks them with a blue dot, returns the marked balls to the container, and thoroughly mixes the balls. She then takes 80 balls again from the container. Of these, 16 have blue dots. She now wants to use this data to estimate the total number of ping-pong balls in the container.The best estimate for the percentage of ping-pong balls in the container that are marked is
A. 15%. B. 5%. C. 10%. D. 20%. E. none of these
Determine any local or absolute extrema as indicated.Estimate graphically the absolute extrema of 
A. Absolute maximum: 2.2; absolute minimum: -0.4 B. No absolute maximum; absolute minimum: 2.2 C. No absolute maximum; absolute minimum: -0.4 D. Absolute maximum: 2.2; no absolute minimum
Find the coordinates of the vertex for the parabola defined by the given quadratic function.f(x) = x2 + 6
A. (0, 6) B. (6, 0) C. (-6, 0) D. (0, -6)
Find all numbers for which the rational expression is not defined.
A. None B. d = 2 C. d = 2, 3 D. d = -2