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krivulja u ravnini

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2. Krivulje trećeg reda<br />

Kubna parabola<br />

Kubna parabola<br />

Jednadžba:<br />

y ax<br />

3<br />

y ax<br />

1/3<br />

Parametarske jednadžbe: x<br />

t<br />

x<br />

t<br />

3<br />

y<br />

3<br />

at<br />

y at<br />

U ishodištu: točka infleksije točka infleksije<br />

Semikubna parabola<br />

Neilova parabola<br />

Jednadžba:<br />

Parametarske jednadžbe:<br />

y ax<br />

x<br />

t<br />

3/ 2<br />

2<br />

y at<br />

3<br />

y ax<br />

x<br />

t<br />

2/3<br />

3<br />

y at<br />

2<br />

U ishodištu: šiljak (singularna točka) šiljak (singularna točka)<br />

ix

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