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WSKT 212 PAC

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U hoef nie die tabel in u skrif oor te<br />

teken nie.<br />

7.4 Gebruik u grafiek en skat die waarde<br />

van r waarvoor die buite-oppervlakte<br />

‘n minimum sal wees en dui dit<br />

duidelik op u grafiek aan.<br />

7.5 Gebruik u antwoord op vraag 2.4 en<br />

bereken die minimum moontlike<br />

buite-oppervlakte van die silinder.<br />

Toon hierdie waarde duidelik op u<br />

grafiek aan.<br />

7.6 Wat is die grootste aantal draaipunte<br />

wat ‘n tweedegraadse grafiek kan hê?<br />

7.8 Noem enige vier maniere maniere<br />

waarop ‘n werkliksgetroue situasie<br />

wiskundig voorgestel kan word.<br />

96<br />

You do not need to copy the table into<br />

your answering script.<br />

Use your graph to estimate the value<br />

of r so that the surface area is a<br />

minimum and clearly indicate it on<br />

your graph.<br />

Use your answer to question 2.4 and<br />

calculate the minimum possible surface<br />

area of the cylinder. Clearly indicate<br />

this value on your graph.<br />

What is the highest number of turning<br />

points that a quadratic curve can have?<br />

List any four ways in which a real life<br />

situation my be represented<br />

mathematically.

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