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Skali 3B Nemendabók Lausnir © 2016 Menntamálastofnun 8550
4 KAFLI
4.58
a
Botnpunktur: (5, 0)
b
Botnpunktur: (–5, 0)
c
Topppunktur: (5, 0)
d
Topppunktur: (–5, 0)
4.59
a
Botnpunktur: (1, 4)
b
Botnpunktur: (1, –4)
c
Topppunktur: (–1, 4)
d
Topppunktur: (–1, –4)
4.60
a
Botnpunktur: (–1, 2). Skurðpunktur við y-ás: (0, –1)
b
Botnpunktur: (2, 0). Skurðpunktur við y-ás: (0, 2)
c
Topppunktur: (9, 50). Skurðpunktur við y-ás: (0, –4)
4.61
a
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
–1
–2
–3
f
–5 –4 –3 –2 –1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
b
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
–1
–2
–3
–4
–5
g
–5 –4 –3 –2 –1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
c
11
10
9
8
7
6
5
4
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
h
–6 –5 –4 –3 –2 –1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
d
1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
–11
–12
–13
–14
–15
–16
k
–6 –5 –4 –3 –2 –1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
4.62
a
f
(
x
) = −
x
2
− 2
b
f
(
x
) = 12 (
x
+ 3
2 )
2
c
f
(
x
) = 2(
x
− 2)
2
d
f
(
x
) = −(
x
− 10)
2
+ 5