Sketch the phase portrait for each of the following systems. (As usual, r, denote polar coordinates.) 7.1.1 r=r³-4r, 0 = 1 r=r(1-²)(9-r²), 0 = 1 7.1.2

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7.1.2 only
Sketch the phase portrait for each of the following systems. (As usual, r, denote polar
coordinates.)
7.1.1
r=r³-4r, 0 = 1
r=r(1-²)(9-r²), 0 = 1
7.1.2
Transcribed Image Text:Sketch the phase portrait for each of the following systems. (As usual, r, denote polar coordinates.) 7.1.1 r=r³-4r, 0 = 1 r=r(1-²)(9-r²), 0 = 1 7.1.2
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