### Home > CALC > Chapter 10 > Lesson 10.3.2 > Problem 10-128

10-128.

For the three polar curves

*r*_{1}= 2 + cos*θ*,*r*_{2}= 2 + 2 cos*θ*, and r_{3}= 2 + 3 cos*θ*: Homework Help ✎What are the minimum values of

*r*for each of the functions? What is the corresponding*θ*-value?How does your answer to part (a) explain what happens to the graphs as

*θ*moves fromto ?

Recall that –1 ≤ cos(*θ*) ≤ 1.