Exercise 3.  Which of the following points lie inside the circle   ?  Explain your answers.

3 (c).  .  

Solution 3 (c).

See text and/or instructor's solution manual.

Outside, since  .  

We are done.   

Aside.  We can let Mathematica double check our work.

This solution is complements of the authors.

(c) 2008 John H. Mathews, Russell W. Howell