1. Use a graphing utility to graph the polar equation shown below.

r = cos 5 + n cos , 0

For the integers n = -5 to n = 5. As you graph these equations, you should see the graph change shape from a heart to a bell. which values of n produce the heart-shaped curves and which values of n produce the bell-shaped curves and why?

2. what is the term eccentricity and how it can be used to classify conics.

3.how to form the rows of Pascal's triangle.

4.How does the expansion of (x + y)n and (x - y)n differ? Support your explanation with an example.