Evaluate the double integral ∬Dx6ydA, where D is the top half of the disc with center the origin and radius 4, by changing to polar coordinates.

Which expression is rational? 6. , square root two, square root 14, square root 49

With both problems. a. s.a. p directions on photo ^

Is there a direction u in which the rate of change of f(x, y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.