
Práctica 1 - Funciones
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Mathematics
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sea ƒ una función que cumple: ƒ(2)=1 y ƒ(-1)=-8. Calcula el valor de ƒ(0)-ƒ(1).
8
12
6
10
14
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Indica la función lineal que cumple: ƒ(1)=3 y ƒ(2)=2ƒ(3).
ƒ(x)=2+x
ƒ(x)=9-x
ƒ(x)=4-x
ƒ(x)=4+x
ƒ(x)=8-x
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Halla el rango de g(x)= -3x + 7, con xϵ ]0, 2[.
]-1, 0[
]1, 7[
]-7, 1[
]0, 1[
]-1, 2[
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Calcula el área del triangulo limitado por la parte positiva de los ejes de coordenadas y por la recta y=10-5/2x
10u2
15u2
25u2
40u2
20u2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dada la función lineal ƒ(x) = -3 + bx. Halla ƒ(-2) si la recta que representa a ƒ es paralela a la recta que pasa por los puntos (2, 1) y (6, 3)
-4
4
-2
2
1
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Al graficar la función h(x) = -2x2 + 6x - 3, el vértice de la parábola tiene coordenadas (a, b). Calcula a - b
3
-3
-2
1
0
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Calcula el rango de ƒ(x) = x2 - 4x + 9, ∀xϵℝ.
[7, +∞[
[5, +∞[
[2, +∞[
[-5, +∞[
[-2, +∞[
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