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VOORBEREIDENDE EKSAMEN
2015
MEMORANDUM
VAK: WISKUNDE V1 (10611)
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Grade 12 NSC Mathematical Literacy P1 (Afrikaans) 2015 Preparatory Examination Possible Answers hlayiso.com
Mathematical Literacy · Grade 12 · Gauteng Mock Exam · 2015 · Afrikaans. Memorandum, 11 pages. Read online or download the PDF.
- Subject
- Mathematical Literacy
- Grade
- Grade 12
- Language
- Afrikaans
- Document type
- Memorandum
- Year
- 2015
- Exam period
- Gauteng Mock Exam
- Paper
- 1
- Pages
- 11
- File size
- 415.9 KB
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10611/15
GAUTENGSE DEPARTEMENT VAN ONDERWYS
VOORBEREIDENDE EKSAMEN – 2015
WISKUNDE
(Eerste Vraestel)
MEMORANDUM
VRAAG 1 [21 PUNTE]
1.1 1.1.1 5 3A
x of x 2 of x 2
2
[3]
1.1.2 x 9 of x 9 0
2 2 1A
x 3 of x 3 1A kritiese waarde van 3
2A elke ongelykheid
Maks 2/3 as ‘en’ gebruik is
Volpunte as ‘of’ is uitgelaat is
[4]
1.1.3 62 x .22 x 8.62 x 1A faktorisering van grondtalle
of 24 x .32 x 8.32 x .22 x
of 24 x .32 x 23 2 x .32 x
22 x 8 1DA
2x 3 1DA
3
x 1DA
2
[4]
1.2 9
( x 1)2 1A
2
9
x 1 1DA
2
x 1,12 of x 3,12 2DA vir elke oplossing
OF
2x 4x 7 0
2 1A standaard vorm
4 42 4(2)(7)
x 1DA substitusie in korrekte formule
2(2)
x 1,12 of x 3,12 2DA vir elke oplossing
[4]
1
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10611/15
1.3 (2 x 7) 5 1
1A korrekte vervanging
x 1 2
2(2 x 12) x 1 1DA vereenvoudiging
x5 1DA
Substitusie x 5 : y 2(5) 7
y 3 1DA
OF
y5 1
y 7 2
1 1A korrekte vervanging
2 2
y 5
2( y 5) 1DA vereenvoudiging
2 2
y 3 1DA
3 7
Substitusie y 3 : x
2 2
x5 1DA
[4]
1.4 1 p 0 1A
p 1 1DA [2]
VRAAG 2 [12 PUNTE]
2.1 2.1.1 x 1A vir
x
x
2 2
x2
= 1DA vir vermenigvuldiging met x
2
[2]
2.1.2 xx2 1A x 2
= 2x 2 1DA vir som met x
[2]
2.2 x2 1M
2 x 2 x 2 1DA
2
x2 6 x 0 1DA vereenvoudigde vorm
x( x 6) 0 1DA faktorisering
x 6 1DA kies van korrekte x-waarde
[5]
2.3 Die reeks konvergeer nie. 1DA
r 3 . Vir konvergensie, 1 r 1 1M enige logiese verduideliking
[2]
2
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10611/15
VRAAG 3 [8 PUNTE]
3.1 (250)2 4(250) 1A Substitusie
6350 1DA
[2]
3.2 T100 S100 S99 1M
1002 4(100) [992 4(99)] 1A korrekte substitusie
= 203 1DA
OF
T1 5 ; T2 7 ; T3 9 1A vir eerste drie terme
T100 5 99(2) 1M vir korrekte formule
= 203 1DA
[3]
3.3 n2 4n 1440 1A
(n 40)(n 36) 0 1DA korrekte faktore of korrekte
substitusie in korrekte formule.
n 36 1DA keuse van korrekte n.
Volpunte vir antwoord alleenlik
[3]
VRAAG 4 [6 PUNTE]
4.1 2; 6; 12; 20 1A vir eerste drie terme
1A vir T4
[2]
4.2 a 1; b 1; c 0 3A a, b en c deur middel van enige
korrekte metode
Tn n2 n of Tn n(n 1)
T100 100(100 1)
10100cm2 1DA
[4]
3
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10611/15
VRAAG 5 [15 PUNTE]
5.1 5.1.1 A 650000(1 0,3) 4 1A vervanging in korrekte formule
=R156 065 1DA
[2]
5.1.2 A 650 000(1 0,15) 4 1A vervanging in korrekte formule
= R1 136 854,06 1DA
[2]
5.1.3 1136854, 06 156065 980789, 06 1DA
0, 095 48 1M gebruik van korrekte formule
x 1 1 1DA vervanging in korrekte formule
12
980789, 06
0, 095
12
= R16 875,92 1DA
[4]
5.2 5.2.1 0, 092 84 1M
11636, 02 1 1 1A korrekte vervanging
12
84
0, 092
OB 1275000 1
12 0, 092
12
R1056675,39 1DA
[3]
5.2.2 0, 092
5
1056675,39 1 1DA vir korrekte formule
12
= R1097807,15 1DA
0, 092 151
x 1 1 1DA vervanging in korrekte formule
12
1097807,15
0, 092
12
= R12297,82 1DA
[4]
VRAAG 6 [3 PUNTE] y
o x 1M korrekte vorm
1A horisontale asimptote
1A negatiewe y-waarde
[3]
4
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10611/15
VRAAG 7 [19 PUNTE]
7.1 2 x 2 4 x 30 0 1M gelyk aan 0
( x 5)( x 3) 0 1A korrekte faktore
A(5;0) B(3;0) 2 DA vir beide afsnitte
-1 as nie in koördinaatvorm
[4]
7.2 y 2( x 2 2 x 15) 1A gemeenskaplike faktor van -2
y 2( x 2 2 x 1 15 1) b
2
1DA bygetel en afgetrek
2
y 2[( x 1)2 16] 1DA in volkome vierkantsvorm
y 2( x 1) 2 32 1DA
Draaipunt (1;32) 1DA
OF
4 1A vervanging in korrekte formule
x
2(2)
x 1 1DA
y 32 1DA
y 2( x 1) 2 32 1DA korrekte vorm
Draaipunt (1;32) 1DA
[5]
7.3 y 2(1)2 4(1) 30 1M substitusie in vergelyking
y 24 - Nee 1DA waarde en gevolgtrekking
OF
2 x 4 x 30 2 x 10
2 1M bepaal snydingspunt
x 2 3x 10 0
x 2 of x 5 - Nee 1DA vir waardes en gevolgtrekking
[2]
7.4 2 x 2 4 x 30 mx 32 1M vir vergelyking
2 x 2 (4 m) x 2 0 1DA vir standaardvorm
0 1M
(4 m) 2 4(2)(2) 0 1DA korrekte substitusie
m 0 of m 8 2 DA vir elke waarde van m
[6]
7.5 (;3) {5} of x 3; x 5 2A
[2]
5
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10611/15
VRAAG 8 [11 PUNTE]
8.1 VA : x 2 1A
HA : y 1 1A
[2]
8.2 1
y 1
y-afsnit: 02 1M
3 1DA
2
1
1 0
x-afsnit: x2 1M
x3 1DA
[4]
8.3
1A vorm
5
1A afsnitte met die asse
4
1A Asimptote
3
2
1
-3 -2 -1 o 1 2 3 4 5
-1
-2
-3
-4
-5
[3]
8.4 1
2 1 1A korrekte vervanging
k 2
5
k 1DA
3
[2]
6
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10611/15
VRAAG 9 [6 PUNTE]
9.1 9 1A korrekte vervanging
2 log a
4
9
a 2 1DA eksponensiële vorm
4
2
a 1DA
3
[3]
9.2 y log 2 x of y l og 3 x
3 2 1A
[1]
9.3 g ( x) 2 1A
[1]
9.4 (; ) 1A
[1]
VRAAG 10 [14 PUNTE]
10.1 10.1.1 f (3 h) f (3)
h 1M korrekte vervanging
2(3 h)2 1 [2(3) 2 1]
1A korrekte formule
h
12h 2h 2
1DA korrekte vereenvoudiging
h
h(12 2h)
1DA
h
12 2h Maks 1/3 as ‘limiet’ gebruik is.
OF
f ( x h) f ( x)
h 1M korrekte formule
2( x h)2 1 [2 x 2 1]
1A korrekte vervanging
h
4 xh 2h 2
1DA korrekte vereenvoudiging
h
h(4(3) 2h)
1DA vervanging van x 3
h
12 2h Maks 1/3 as ‘limiet’ gebruik is
[4]
10.1.2 lim(12 2h) 1M gebruik van limiet
h 0
12 1DA
[2]
10.1.3 m0 1A
[1]
7
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10611/15
10.2 10.2.1 y 16 16 x 4 x 2 1A vir vereenvoudiging
dy
y ' of 16 8x 2DA
dx
(-1 vir verkeerde notasie)
[3]
10.2.2 1
y x ax 2 a 1A vir vereenvoudiging
1
1
y ' 1 ax 2
2DA
2
a
y ' 1 1 1DA positiewe eksponente
2
2x
[4]
VRAAG 11 [11 PUNTE]
11.1 Die grafiek gaan deur die oorprong
Of
f ( x) ( x 0)2 ( x a)2
1M enige logiese verduideliking
[1]
11.2 11.2.1 f ( x) x( x 2) 2 1A faktorisering
a2 1DA
[2]
11.2.2 f '( x) 0 1M
3x 2 8 x 4 0 1A korrekte differensiasie
(3x 2)( x 2) 0 1DA faktore
2
b 1DA
3
[4]
11.3 f '(0) 3(0)2 8(0) 4 1DA vervanging in die afgeleide
m4 1DA
[2]
11.4 x3 4 x 2 4 x p 2 1M 2 na RK
p2 1DA (volpunte vir antwoord alleen)
[2]
8
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10611/15
VRAAG 12 [9 PUNTE]
12.1 x
x 2 40 0 1M vir ongelykheid
3
x 120km / uur 1A vir ongelykheid teken
1DA vir 120km/uur
Volpunte as eenhede uitgelaat is
[3]
12.2 x3
P 40 x 2
3
P '( x) 0 1M
80 x x 0
2
1DA
x(80 x) 0
1DA korrekte faktorisering
x 80km / uur 1DA
803
P 10(80)2 1DA
12
P 21333,33 Rand / dag 1DA
Volpunte as eenhede uitgelaat is
[6]
9
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10611/15
VRAAG 13 [15 PUNTE]
13.1 1 7
2A vir beide uitkomste
6 16
1M vir die som
29
1DA vir vereenvoudiging
48
[4]
13.2 13.2.1 S
3A vir elke afdeling
A B
1 5
x 6 12
1
3
[3]
13.2.2 1 5 1
x 1 1M
6 12 3
1
x 1A
12
1 1 1
P( A) 1DA
6 12 4
[3]
13.3 36 000 1A
[1]
13.4 13.4.1 2.9! 2A
[2]
13.4.2 8.8! 2A
[2]
10
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