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

10-128.
  1. For the three polar curves r1 = 2 + cos θ, r2 = 2 + 2 cos θ, and r3 = 2 + 3 cos θ: Homework Help ✎

    1. What are the minimum values of r for each of the functions? What is the corresponding θ-value?

    2. How does your answer to part (a) explain what happens to the graphs as θ moves from to ?

Recall that –1 ≤ cos(θ) ≤ 1.