a) =
(4,3)
=
(2,5)
·
=
4·2+3·5 = 23
|| =
= 5
|| =
@ 5,39
b) =
(5,3)
= (-3,2)
·
=
5(-3)+3·2 = -9
|| =
@ 5,83
|| =
@ 3,61
c) =
(2,-2)
= (3,4)
·
=
2·3+(-2)·4 = -2
|| =
@ 2,83
|| =
= 5
d) =
(4,1)
= (-1,-2)
·
=
4(-1)+1(-2) = -6
|| =
@ 4,12
|| =
@ 2,24
e) =
(4,0)
= (1,3)
·
=
4·1+0·3 = 4
|| = 4
|| =
@ 3,16
f) =
(3,-2)
= (-2,3)
·
=
3(-2)+(-2)·3 = -12
|| =
@ 3,61
|| =
@ 3,61
g) =
(3,2)
= (-3,-2)
·
=
3(-3)+2(-2) = -13
|| =
=
|| =
=
h) =
(6,3)
= (2,1)
·
=
6·2+3·1 = 15
|| =
=
|| =
=
i) =
(4,1)
= (-1,4)
·
=
4(-1)+1·4 = 0
|| =
@ 4,12
|| =
@ 4,12
j) =
(3,0)
= (0,-2)
·
=
3·0+0(-2) = 0
|| = 3
|| = 2