Understanding Engineering Mathematics

(やまだぃちぅ) #1
Answers to reinforcement exercises

7.3.1 Coordinate systems in a plane


A.


y

− 4 − 3 − 2 − 10 1 2 3 4 x

3

4

(−2,3)

(−1,−1)

(0,−2)

2 (3,2)

1

− 1

− 2

− 3

− 4

(0,4)

(3,−1)

(1,1)
(4,0)

B.

123

(i)

(vii)
(iv)
(viii)

(vi)

(iii)

(v)

(ii)

p 2 p

0

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
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