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Exam (elaborations)

Exámenes finales de Análisis Matemático II - con respuestas

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Exámenes finales de Análisis Matemático II dede el año 2013 al 2018, incluye respuestas a algunos temas de cada examen.

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UNIVERSIDAD NACIONAL DE LUJAN
DIVISIÓN MATEMÁTICA
EXAMEN FINAL DE ANÁLISIS II / 2013
____________________________________________________________________

1) Calcular la integral
x2 y2

D
1
9

4
dx dy

 x2 y2 
donde D  ( x, y ) :   1
 9 4 

2) Escribir la ecuación cartesiana del plano normal y la ecuación vectorial de la recta
tangente a la curva intersección de las siguientes dos superficies
x2  2y2  z2  0
x  y3  z  3
en el punto (1, 1, -1).

1

3) Dada la función f ( x, y)  x  y e
2 2
  x
2 .
Calcular su máximo y su mínimo
absolutos y los puntos donde éstos son alcanzados en el dominio x 2  y 2  1 .

x
4) Calcular la longitud de la curva f ( x)   2t  1 dt , donde x  0,1 .
0



x y 
5) Dado el campo F ( x, y, z )   , , z 2  verificar el teorema de la Divergencia en el
2 2 
sólido T  ( x, y, z ) : 0  z  1  x  y .
2 2




6) Hallar el área de la superficie z  16  x 2  y 2 definida en el dominio
x2  y2  4 .

7) Hallar la solución general de la siguiente ecuación diferencial

y' '4 y'4 y  sin x

 x2  y2 
8) Calcular la integral del campo F ( x, y)   x y,  sobre el arco de cardioide
 2 
r  1 cos desde el punto correspondiente a   0 hasta el punto correspondiente a

 , en sentido antihorario.
2

,
, 1 Respuestas. Final 20 de diciembre de 2013
1) 4π.

2) Recta: X(t) = (1, 1, −1) + t(1, 0, 1). Plano: x + z = 0.

3) M = e en (−1, 0) y m = 0 en (0, 0).

8 2 2
4) 3
− 3


5) Integral de la divergencia = Flujo saliente a través de la frontera del sólido=
5
6
π

6) 8π(4 − 12)

7)y = c1 e−2x + c2 xe−2x − 4
25
cos x + 3
25
sin x

8)1/6

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