Dit is een samenvatting over hoofdstuk 2 veranderingen van wiskunde b hierin wordt stapsgewijs alles uitgelegd en komen de belangrijkste dingen naar boven die je moet kennen en kunnen.
Wiskunde samenvatting hoofdstuk 2:
Voorkennis:
(a + b)2 = a2 + 2ab + b2
(a - b)2 = a2 - 2ab + b2
(a + b)(a - b) = a2 - b2
Paragraaf 2.1:
Interval = stukje van de x-as.
Open interval = de zijkanten doen mee.
Gesloten interval = zijkanten doen niet mee.
[ ] = gesloten interval.
<> = open interval.
Paragraaf 2.2:
2 manieren om over snelheid te praten:
➔ Gemiddelde snelheid over 1 periode (2 punten).
➔ Snelheid op 1 moment.
Δy
rc = = gemiddelde snelheid = differentiequotiënt.
Δx
op 0 = 15oC
op 4 = 11oC
op 8 = 12oC
Tijdsinterval Δ T in oC
[0,4] 11 - 15 = -4
[4,8] 12 - 11 = 1
Paragraaf 2.3:
1. Voer de formule in in GR.
2. Ga naar functie helling en voer het getal in die je wilt weten
Voorbeeld:
De lijk k raakt de grafiek van F1(x) = x2 - 2x -1 in het punt A met xA = 3 stel de formule op
van k.
1. Voer in F1(x) = x2 - 2x - 1
2. Voer in helling = 3
[ ]
dy
dx
x=3 =4
3. y = ax + b
4. k: y = 4x + b
5. k: (3,2)
4∙2+b=2
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