. Let R be the firsGquadrant rcgion bounded by the
Chapter 13, Problem 54(choose chapter or problem)
. Let R be the firsGquadrant rcgion bounded by the lemniscates 12 : 3cos20, 12 = 4cos20 and 12 = 3sin29. 12 =4sin2g (Fig. I3.MPl). Show rhat its area is . 10_74 " = ___ 4__. lSuggestion: Denne the tmnsformation I from the ay-plane tother6-planeby/2:ut/2cos20,r2 = url2 sin 29. Show first that . ull r.=_. e= u+v Then show that 0(r.0) I : --- l Afu, v) l6rtu + vt3/2 '
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