
Operaciones con funciones
Authored by CARMEN D CLEMENTE
Mathematics
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si f(x) = x2 + 5 y g(x) = x - 5, entonces:
f(g(x)) = x2 - 10x + 30
f(g(x)) = x2 - 10x
f(g(x)) = x2
f(g(x)) = x2 -1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sean f(x) = 3x2 - 5x y g(x) = 1/x, ¿Cuál de las siguientes funciones es f[g(x)]?
h(x) = 3/x2 - 5/x
h(x) = x/(3x2 - 5x)
h(x)=1/(3x2 - 5x)
h(x) = (3x2 - 5x)/x
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si f(x) = 1/x y g(x) = x2 - 1, ¿cuál de las siguientes funciones es g(f(x))?
(1/x)2 - 1
1/(x2 - 1)
1/(x - 1)2
(1/x - 1)2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La función inversa de y = 9x - 3 es:
y = 3x - 9
y = x/ 9 - 1/3
y = (x - 3) / 9
y = (x + 3) /9
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sea f(x) = Ln (x2 + 1) y g(x) = 1/x. ¿Cuál es el dominio de (f + g)?
Todos los números reales negativos
Todos los números reales menos el cero
Todos los números reales positivos
Todos los números reales
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Considera las funciones f(x) = x2 + 1 y g(x) = 5x, ¿Cuál es la función f compuesta con g?
5x2 + 5
5x2 + 1
25x2 + 1
25x2 - 1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Si hacemos la composición de una función con su función inversa, ¿qué obtenemos?
La función identidad
La función nula
Depende de cómo sean las funciones
La función unidad
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