
Función Irracional
Presentation
•
Mathematics
•
11th Grade
•
Practice Problem
•
Medium
Claudia Osuna
Used 14+ times
FREE Resource
7 Slides • 5 Questions
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Función Irracional
ACADEMIA DE CÁLCULO DIFERENCIAL
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Función irracional
Las funciones con radicales son las funciones que tienen la variable independiente X bajo el signo radical, es decir:
f(x)=ng(x)
Si n es un número par su dominio es el intervalo en el que g(x) ≥ 0 .
Si n es impar, su dominio es R (conjunto de numeros reales)
Su representación gráfica es una rama de una parábola.
3
Ejemplos:
f(x)=x+3
f(x)=x2+4
f(x)=3x3+8
REVICEMOS EL SIGUIENTE VIDEO:
https://www.youtube.com/watch?v=CglQ0SGURAQ
4
TIPOS DE FUNCIONES IRRACIONALES
Cuando n es par
f(x)=x+2
El dominio es x + 2 >= 0
resolviendo la desigualdad tenemos que x >= -2
El rango lo localizas sustituyendo x = -2 en la función original
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6
7
Multiple Choice
1. ¿Una función irracional es aquella donde la variable x esta dentro de un radical?
Cierto
Falso
8
Multiple Choice
2. ¿Una función irracional, gráficamente es una parábola?
Cierto
Falso
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Multiple Select
3. Indica cuales son funciones irracionales (son 2).
y = x + 2
f(x)=4x2+4
y=x27
f(x)=25+4x
10
Multiple Choice
4. Indica el dominio de la función:
f(x)=3x−1(⌈1,∞ )
(⌈−1, ∞)
(−∞, 1)
Ninguna
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Multiple Choice
5. ¿Cuál seria el dominio de una raíz cubica o impar?
(0, 0)
(0,∞)
(−∞, 0)
(−∞, +∞)
Función Irracional
ACADEMIA DE CÁLCULO DIFERENCIAL
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