•Let
•C be the unit
circle with center (1,0)
•Cr be the circle with radius r and center (0,0)
•P be the point
(0, r)
•Q be the upper
point of intersection of C and Cr
•R be the
intersection of the line PQ and the x-axis.
•
•What happens to R as Cr shrinks to the origin?
•
•Stewart, Essential
Calculus: Early Transcendentals,
Thomson Brooks/Cole,
2007, p. 45, Exercise 56.