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WSKT 212 PAC

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8.2 Dit is moontlik om die formule hierbo<br />

soos volg te skryf:<br />

( ) 3 2<br />

V x = 4x − 150x + 1350x,<br />

Wat presies beteken hierdie<br />

skryfwyse?<br />

Wenke:<br />

• Wat is die onafhanklike<br />

veranderlike?<br />

• Op watter as van ‘n grafiek sal ons<br />

die onafhanklike veranderlike<br />

aandui?<br />

• Wat is die afhanklike veranderlike<br />

en hoe sien u dit?<br />

• Op watter as van ‘n grafiek sal ons<br />

die afhanklike veranderlike<br />

aandui?<br />

• Wat moet ons weet voordat ons<br />

die volume-waarde kan bereken?<br />

8.3 Wat word bedoel met die<br />

definisieversameling van die<br />

funksie?<br />

(Wees spesifiek in u verduideliking)<br />

98<br />

It is possible to write the formula above<br />

as follows:<br />

( ) 3 2<br />

V x = 4x − 150x + 1350x,<br />

What is the precise meaning of this<br />

notation?<br />

Hints:<br />

• What is the independent variable?<br />

• On which axis of the graph shall we<br />

indicate the independent variable?<br />

• What is the dependent variable and<br />

how do you see that?<br />

• On which axis of the graph shall we<br />

indicate the dependent variable?<br />

• What must we know before we can<br />

calculate the volume-value?<br />

What do we mean by the domain of<br />

the function?<br />

(Be explicit in your explanation)

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