Help with polar equations

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Write a polar equation that reaches a maximum r-value of 8 and a minimum r value of 2. 

How do you do this?? 

May 10th, 2015

r=2+3(1-costheta) 

r = 8 when cos =-1 

r = 2 when co = 1


May 10th, 2015

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May 10th, 2015
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May 10th, 2015
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