Understanding Engineering Mathematics

p 12 2 p

0

3

p

2

p

6

p

3

2 p

3

5 p

6

4 p

3

3 p

2

5 p

3

11 p

6

7 p

6

Figure 7.2Polar plot ofr= 1 +2cosθ.

Solution to review question 7.1.1

A.

y

− 4 − 3 − 2 − 10 1 2 3 4 x

3

4

(−2,4)

(−2,−3)

(−1,3)

(3,3)

(0,1)

(0,0)

(3,−2)

(0,−1)

2

1

− 1

− 2

− 3

− 4

Figure 7.3The points of 7.1.1(A).