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Exercicios resolvidos James Stewart vol. 2 7ª ed - ingles

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SECTION 10.3 POLAR COORDINATES 0 17<br />

39. r = 1--2sin8<br />

0=!!.<br />

__________ ..• ----- 6<br />

41. r 2 = 9sin28<br />

3<br />

2..- 0<br />

-3<br />

43. r = 2 + sin 38<br />

r<br />

3<br />

2<br />

(3, ..-j6)<br />

2..­<br />

---r--~------~----+- t-~<br />

3..- 7..- 11..- 0<br />

6 6 6<br />

45. r = 1 + 2cos28<br />

IJ<br />

47. For(}=:= 0, 7T, and 27T, r has its minimum ;value of about 0.5. For 0 =~and<br />

We see that the graph has a similar shape for 0 ~ (} ~ 7T and 7T ~ 8 ~ 27T.<br />

3<br />

", r attains its maximum va lue of2.<br />

2<br />

. r 2<br />

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