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Lecture notes 2011 (slides), pdf.file - Katedra matematiky FEL ČVUT

Lecture notes 2011 (slides), pdf.file - Katedra matematiky FEL ČVUT

Lecture notes 2011 (slides), pdf.file - Katedra matematiky FEL ČVUT

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Tečný vektor ... ϕ ′ (t)<br />

Délka kˇrivky ... l(C) = b<br />

a |ϕ′ (t)| dt.<br />

Orientace ... zp˚usob probíhání kˇrivky, kladná a záporná.<br />

Pˇríklady:<br />

1. [a, b]<br />

ϕ(t) = a + t(b − a) , t ∈ [0, 1] .<br />

ϕ ′ (t) = b − a .<br />

2. Elipsa se stˇredem 1 + j, poloosy a = 1, b = 2, osy<br />

rovnoběžné se souˇradnou soustavou.<br />

ϕ(t) = 1 + j + cos t + 2j sin t t ∈< 0, 2π > .<br />

ϕ ′ (t) = − sin t + 2j cos t .<br />

Jan Hamhalter http://math.feld.cvut.cz/hamhalte Matematika pro Kybernetiku <strong>Lecture</strong> Notes 80 / 369

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