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UBA - CienciaS :: Ver Tema - 1r parcial 2do cuatri 2010
UBA - CienciaS
http://ubacs.com.ar/ubacs/

1r parcial 2do cuatri 2010
http://ubacs.com.ar/ubacs/viewtopic.php?f=308&t=2332
Página 1 de 1

Autor:  ALE [ 30 Dic 2010, 00:29 ]
Asunto:  1r parcial 2do cuatri 2010

Ejercicio 1
a) Probar que si las cuádricas Q y Q' son de distinto tipo (i.e. sin centro, con centro y sin puntos singulares, con puntos sing) entonces no existe un isoafin tal que
b) Sean
Encontrar los a y b tales que exista uno isoafin f demodo que
Ejercicio 2
Sea una curva par por long de arco, con curvatura y torsión constantes. Denotamos con su triedro de Fernet. Sea ahra la curva . Calcular el triedro de fernet de dicha curva, su curvatura y su torsión.
Ejercicio 3
Sea c una curva en par por long de arco con curvatura verificando: para todo t, donde L es una función escalar y p un punto de R^3
a) Probar que c es una curva plana
b) Probar que c está incluida en una circunferencia, hallar el radio de la misma y L en términos de la curvatura de c.
Ejercicio 4
Sean curvas del plano par por long de arco tales que . Si además probar que en un entorno de 0 envuelve a
Ejercicio 5
Probar que es una dup regular de R^3. VErificar que con y es una parametrización.

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