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Samenvatting 6.0 Voorkennis_Kruislings vermenigvuldigen - Willem-Jan van der Zanden $2.72   Add to cart

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Samenvatting 6.0 Voorkennis_Kruislings vermenigvuldigen - Willem-Jan van der Zanden

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6.0 Voorkennis_Kruislings vermenigvuldigen - Willem-Jan van der Zanden Voorbeeld 1: Teken de grafiek van y = x2 - 3x – 2;

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  • July 28, 2023
  • 34
  • 2020/2021
  • Summary
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6.0 Voorkennis
Kruislings vermenigvuldigen:
A C
  AD  BC
B D
Voorbeeld:
50
 10
x 1
50  10( x  1)
50  10x  10
10x  60
x 6




Willem-Jan van der Zanden 1

, 6.0 Voorkennis
Herhaling van rekenregels voor machten:
ap 1
a a  a
p q p q
[1] q  a pq [2] a0  1 als a  0[5] a p  p
[6]
a a
a 
q 1 p
p
a pq
[3] (ab)  a b [4]
p p p
a  a
q q q
[7] a  a p [8]
q



Voorbeeld 1:
Schrijf als macht van a:
1 3 8 3 83 5
: a  a : a  a  a
a8
Voorbeeld 2:
Schrijf zonder negatieve exponenten:
3
3  1 1 243 243
 7a  3

27

243

27a3
  3  a3
 7a 243
 


Willem-Jan van der Zanden 2

, 6.1 Kwadratische formules [1]
Voorbeeld 1:
Teken de grafiek van y = x2 - 3x – 2;

Stap 1:
Vul bij de GR de formule in:
Y= | Y1= X^2 – 3X -2

Stap 2:
Maak een tabel met de GR:

x -1 0 1 2 3 4
y 2 -2 -4 -4 -2 2




Willem-Jan van der Zanden 3

, 6.1 Kwadratische formules [1]
Stap 3:
Teken de grafiek van y = x2 - 3x – 2;




• Dit is de grafiek van de tweedegraadsfunctie / kwadratische functie:
y = x2 - 3x - 2;
• De functie heeft een top (minimum) in het punt (1,5; -4,25); Dit is te
berekenen met de optie MINIMUM op de GR;
• De grafiek van deze functie is een dalparabool.

Willem-Jan van der Zanden 4

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