
Operaciones con funciones
Authored by Fabricio Tacco
Mathematics
University
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8 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 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
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
El dominio de: está definido por la expresión:
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Obtener
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
•Sean las funciones f y g definidas en los reales mediante ,
y entonces cual de las siguientes afirmaciones es FALSA?
Existe más de un valor de x de modo que
El recorrido de es el intervalo [-1,∞[
A)El recorrido de es el intervalo [0,∞[
5.
MULTIPLE CHOICE QUESTION
2 mins • 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
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dado f(x)=x²-12; g(x)= x+3
Evalúa (fg)(5)
116
375
104
39
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dado f(x)=x²-12; g(x)= x+3
Evalúa (f-g)(1)
-6
-7
-14
-15
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