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7.2<br />

2 2<br />

x y<br />

− = 1<br />

9 36<br />

7.3 Ons weet dat die basiese ellips en<br />

sentrale hiperbool simmetries om die<br />

X-as is. Gebruik hierdie feit en teken<br />

die volledige grafieke (bo en onder<br />

die X-as) van die kegelsnitte in 7.1 en<br />

7.2.<br />

173<br />

2 2<br />

x y<br />

− = 1<br />

9 36<br />

We know that the basic ellipse and<br />

central hyperbola are symmetrical with<br />

respect to the X-axis. Use this fact and<br />

draw complete graphs (above as well<br />

as below the X-axis) of the conic<br />

sections in 7.1 and 7.2

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