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PROVINSIALE EKSAMEN
JUNIE 2022
GRAAD 11
NASIENRIGLYNE
WISKUNDE
VRAESTEL 1
12 bladsye
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Mathematics Grade 11 P1 Gauteng June 2022 Memo (Afrikaans)
Grade 11 Mathematics Paper 1 memorandum from the Gauteng June 2022 (Afrikaans), 12 pages. Read online or download the free PDF.
Mathematics · Grade 11 · Gauteng June · 2022. Memorandum, 12 pages. Read online or download the PDF.
- Subject
- Mathematics
- Grade
- Grade 11
- Document type
- Memorandum
- Year
- 2022
- Exam period
- Gauteng June
- Paper
- 1
- Curriculum
- CAPS
- Pages
- 12
- File size
- 952.7 KB
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This exam
Gauteng June 2022
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WISKUNDE
NASIENRIGLYNE
(Vraestel 1) GRAAD 11
VRAAG 1
1.1 x −3 ; x −1 antwoord
✓ uitsluiting (2)
1.2.1 ( x + 4)( x − 1) = 0
x = −4 or x = 1
✓ antwoorde
(1)
1.2.2 3x 2 − 2 x = 14
3x 2 − 2 x − 14 = 0 standaard vorm
−(−2) (−2) 2 − 4(3)(−14) korrek
x=
2(3)
vervanging
1 43
x=
3
x = −1,85 or x = 2,52 antwoord
antwoord
NOTE: Penaliseer 1 punt vir afronding slegs en
hierdie (4)
VRAAG.
Enige geldige metode.
1.2.3 45
x 2 − 2 x = 18 − 2
x − 2x
beperkingn x 2 − 2 x 0
restrictio
metode
let : k = x 2 − 2 x
stel:
45
k = 18 −
k
k = 18k − 45
2
k 2 − 18k + 45 = 0
(k − 15)( k − 3) = 0
waardes van k
k = 15 ofor k = 3
– x2x− 2
2
x2
substitute
vervang x in
terug k. int o k .
back
x 2 − 2 x = 15 or
of x − 2 x = 3
2 gelykstelling
x 2 − 2 x − 15 = 0 or
of x − 2 x − 3 = 0
2
( x − 5)( x + 3) = 0 or
of ( x − 3)( x + 1) = 0
x = 5 or x = −3 or of x = 3 or x = −1 waardes van x (4)
NOTA: Enige ander geldige metode.
2
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WISKUNDE
NASIENRIGLYNE
(Vraestel 1) GRAAD 11
1.2.4 5 − x +1 = −x
5 − x = −x −1
5 − x = x2 + 2 x + 1 metode
0 = x + 3x − 4
2
standaardvorm
0 = ( x + 4)( x − 1) faktore
x = −4 or x 1
kritieke waardes
NOTA: Enige ander geldige metode. verwerping (5)
1.2.5 32 x +1 − 4.3x = −1
3.32 x − 4.3x + 1 = 0 standaardvorm
(3.3 − 1)(3 − 1) = 0
x x
faktore
1
3x = or 3x = 1
of
gelykstelling
3
3x = 3−1 ofor 3x = 30
x = −1 of x = 0
antwoorde
OF
32 x +1 − 4.3x = −1
let 3x = k
3k 2 − 4k = −1
3k 2 − 4k + 1 = 0
standaardvorm
(3k − 1)(k − 1) = 0
1 faktore
k = of or k = 1
3 gelykstelling
3x = 3−1 ofor 3x = 30
antwoorde
x = −1 of x=0
(4)
3
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WISKUNDE
NASIENRIGLYNE
(Vraestel 1) GRAAD 11
1.2.6(a) x 2 − 3x 0
x( x − 3) 0 faktore
CVs 0 ; 3
0 x3
antwoord
(2)
1.2.6(b) 3 x 6 ✓ kritieke
waardes
✓ antwoord
NOTA: Antwoord kan as aparte ongelykhede geskryf
word.
(2)
1.3 x + y = −10 xy = −600...(2) opstel van
x = −10 − y...(1)
vergelykings
sub (1) in (2)
(−10 − y ) y = −600 substitusie
−10 y − y 2 = − 600
y 2 + 10 y − 600 = 0 faktore
( y − 20)( y + 30) = 600
waardes van y
y = 20 of of y = −30
as y = 20 as y = −30 waardes van x
x = −30 x = 20
NOTA: Enige ander geldige metode. (5)
[29]
4
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WISKUNDE
NASIENRIGLYNE
(Vraestel 1) GRAAD 11
VRAAG 2
2.1.1 2 8 − 4 32 + 3 50 Punt is vir
= 2 4.2 − 4 16.2 + 3 25.2 die eerste vereenvoudig wortels
= 2.2 2 − 4.4 2 + 3.5 2 lyn.
vereenvoudiging
= 4 2 − 16 2 + 15 2
antwoord
=3 2 (3)
1
2.1.2 −
3 2 [ 12 + 3 (3 3) ]
1 1 1 1
−
3 [( 2 .3) + (3.3 ) ]
2 2 2 2 3
vereenvoudig wortels
1 1 3 1
−
3 [21.3 + (3 ) ]
2 2 2 2
1 1 1
−
3 [2.3 + 3 ]
2 2 2
2.30 + 30 ✓ vereenvoudiging
2 +1 ✓ vereenvoudiging
3 (4)
antwoord
2.1.3 52006 − 52004 + 24
52004 + 1
52004(52 − 1) + 24
52004 + 1 faktoriseer
52004(24) + 24 vereenvoudig
52004 + 1
24(52004 + 1) faktoriseer
52004 + 1 antwoord
24 (4)
2.2.1
x = 6 + 6 + 6 + .........
metode
x 2 = 6 + 6 + 6 + ...
x2 = 6 + x antwoord (2)
2.2.2 x2 − x − 6 = 0 ✓ standaardvorm
( x − 3)( x + 2) = 0 ✓ faktore
x = 3 x −2
✓ antwoord
✓ uitsluiting (4)
5
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WISKUNDE
NASIENRIGLYNE
(Vraestel 1) GRAAD 11
2.3 d 2 = ( 8 − 1)2 + ( 8 + 1)2 Pythag metode
d 2 = 8 − 2 8 +1+ 8 + 2 8 +1
d 2 = 18 waarde van d 2
d =3 2 antwoord
(3)
[20]
6
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WISKUNDE
NASIENRIGLYNE
(Vraestel 1) GRAAD 11
VRAAG 3
3.1.1 -7 0 9 20
7 9 11
2 2
✓ tweede verskil e
2a = 2
a = 1 waarde van a
3(1) + b = 7
b = 4 waarde van b
1 + 4 + c = −7
c = −12 waarde van c (4)
Tn = n + 4n − 12
2
3.1.2 Tn = n 2 + 4n − 12
128 = n 2 + 4n − 12 ✓ gelykstelling
0 = n 2 + 4n − 140
0 = (n − 10)(n + 14) faktore
n = 10 n −14 keuse van n = 10 (3)
3.1.3 Tn = 2n + 5
599 = 2n + 5 ✓ gelykstelling
594 = 2n
n = 297 waarde van n
Die verskil sal tussen terme 297 en 298 gevolgtrekking
wees. (3)
3.2.1 93 antwoord (1)
3.2. 2 Tn = 10n − 3 ✓ Tn = 10n − 3
Tn = (10n − 2) − 1
✓ metode
Tn = 2(5n − 1) − 1
Thus :
(10n − 2) = 2(5n − 1) gelykstelling
10n − 2 EWE vir
EVEN for
enige anyvan
waarde n. of n. verduideliking
value
Tn is is ODD
ONEWE when :
indien:
Tn = (10n − 2) − 1 (4)
[15]
7
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WISKUNDE
NASIENRIGLYNE
(Vraestel 1) GRAAD 11
VRAAG 4
4.1 1 − p;2 p − 3; p + 5
T2 − T1 = T3 − T2
✓ metode
(2 p − 3) − (1 − p) = ( p + 5) − (2 p − 3)
2 p − 3 −1+ p = p + 5 − 2 p + 3
3 p − 4 = − p + 8 ✓ vereenvoudiging
4 p = 12
✓ antwoord
p=3 (3)
4.2.1 T1 = 1 − p
T1 = 1 − 3 ✓ antwoord
T1 = −2
(1)
NOTA: Slegs antwoord: volpunte
4.2.2 T2 = 2 p − 3
T2 = 2(3) − 3
T2 = 3
d = T2 − T1
d = 3 − (−2) ✓ antwoorde
d =5
(1)
NOTA: Slegs antwoord: volpunte
4.3 1- p ; 2p - 3 ; p + 5
= 1 - 3 ; 2(3) - 3 ; 3 + 5
= -2 ; 3 ; 8 ; 13 ; 18; …
Al die terme eindig op ʼn 3 of ʼn 8, behalwe verduideliking
T1 terwyl volkome vierkante eindig op
(2)
0; 1; 4; 5; 6; 9.
[7]
8
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WISKUNDE
NASIENRIGLYNE
(Vraestel 1) GRAAD 11
VRAAG 5
5.1 −3 x 2 ✓ antwoord
NOTA: Kandidate kan die antwoord as
aparte ongelykhede skryf. (1)
5.2 f ( x) = a( x − x1 )( x − x2 )
f ( x) = a( x + 3)( x − 2)
− 8 = a(1 + 3)(1 − 2) (1;−8)
✓ vervang punt D en
− 8 = a(4)(−1) x-afsnitte
a = 2
✓ waarde van a
f ( x) = 2( x + 3)( x − 2)
f ( x) = 2( x 2 + x − 6) ✓ vereenvoudiging van
tweeterm
f ( x) = 2 x 2 + 2 x − 12
a = 2 b = 2 c = −12 ✓ waardes van a, b, c
(4)
5.3 b
x=−
2a
2
x=−
2(2)
2
x=−
4
1
x=− ✓ waarde van x
2
1 1 1
f (− ) = 2( ) 2 + 2( ) − 12
2 2 2 ✓ vervang x in f(x)
1 1
f (− ) = − 1 − 12
2 2
1 1
f (− ) = −12 ✓ waarde van y
2 2
1 1
draaipunt(− ;−12 )
2 2
NOTA: Antwoord hoef nie in (3)
koördinaatvorm te wees word nie.
9
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WISKUNDE
NASIENRIGLYNE
(Vraestel 1) GRAAD 11
1
5.4 x=− +7
2
1
x=6
2 ✓ antwoord
NOTA: Slegs antwoord: volpunte. (1)
5.5 In g m = 6
1
In q m = − ✓ gradiënt van q
6
y = mx + c
1
0 = − ( −3) + c
6
1
0= +c
2
1
c=− ✓ waarde van c
2
1 1 ✓ antwoord
y =− x−
6 2 (3)
NOTE: Answer only: FULL marks
[12]
10
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WISKUNDE
NASIENRIGLYNE
(Vraestel 1) GRAAD 11
VRAAG 6
6.1
✓ vorm van p met y-afsnit = 1
✓ vorm van h
✓ x- en y-afsnitte van h
✓ draaipunt van h
(4)
6.2 Sien skets in Vr. 6.1. ✓ vorm van f(x) met y-afsnit = 1 (1)
6.3 y = 2( x − 1 + 2) 2 − 8
y = 2( x + 1) 2 − 8 ✓ antwoord (1)
6.4 p( x) = 4 x
1
1 ( x+ )
p( x + ) = 4 2
2
1 1 ✓ uitbreiding
p( x + ) = 4 x.4 2
2
1
1
p( x + ) = 4 .(2 )
x 2 2
✓ vereenvoudiging
2
1 ✓ vereenvoudiging
p( x + ) = 4 x.2
2
1
p ( x + ) = 2 p( x)
2 (3)
[9]
11
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WISKUNDE
NASIENRIGLYNE
(Vraestel 1) GRAAD 11
VRAAG 7
7.1 p=4 waarde van p
waarde van q
q=2
a
f ( x) = +2
x−4
a vervang punt (5 ; 3)
3= + 2 T (5;3)
5−4
3=a+2
a = 3− 2
a =1 antwoord (4)
7.2 1 ✓ antwoord
h( x) = − +2
x−4 (1)
7.3 𝑦∈ℝ; y2 antwoord
NOTA: Albei voorwaardes moet gestel word. (1)
7.4 Simmetrie-asse van f is:
y =x-p+q en y=-x-p+q
y =x-4+2 y=-x+4+2
✓ metode
y =x-2 y=-x+6
Kies: y = - x + 6
✓ keuse
c=6
(2)
[8]
TOTAAL: 100
12
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