
Vectores-Planos-Rectas
Authored by Cristian Bernal
Mathematics
University
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si el producto escalar entre dos vectores (no nulos) da cero, los vectores son:
Paralelos
Perpendiculares
Coincidentes
Imposible que de cero
Answer explanation
Recuerden que para verificar perpendicularidad se plantea el producto escalar igual a cero
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si: Proy v u = u entonces, necesariamente:
u = v
Ninguna de las anteriores es correcta
Answer explanation
Recuerden que la proyeccion de un vector sobre otro da siempre uno paralelo al vector sobre el que se proyecta
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Answer explanation
Recuerden que en la ecuación general del plano, si hay una variable que "no aparece" (cuyo coeficiente es nulo) quiere decir que el plano es paralelo al eje correspndiente.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ninguna de las opciones anteriores es correcta
Answer explanation
Recuerden que el resultado de un producto vectorial da un tercer vector perpendicular a los operados
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sean A, B y C tres puntos distintos y colineales de R3.
Podemos afirmar que...
Answer explanation
Recuerden que el módulo del producto cruz arroja el área del pralelogramos de conforman.
Si los puntos son colineales, no existe tal paralelogramo ya que los vectores son paralelos.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Answer explanation
Recuerden que la forma simétrica requiere que las variables tengan un factor igual a 1 en el numerador.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
P(0; -8; 0)
P(0; 2; 0)
P(0; 0; 0)
P(0; 8; 0)
Answer explanation
Si pasamos la ecuación a su forma segmentaria (o si reemplazamos: x=0, z=0) obtendremos el valor de la ordenada al origen
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