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9173781
Inecuaciones con Valor Absoluto
Description
Mind Map on Inecuaciones con Valor Absoluto, created by Eugenio Baso Jurado on 01/06/2017.
Mind Map by
Eugenio Baso Jurado
, updated more than 1 year ago
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Created by
Eugenio Baso Jurado
over 7 years ago
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Resource summary
Inecuaciones con Valor Absoluto
Sea a e R, el valor absoluto de a, denotado por |a|, es: |a|={a, Si a>0; -a, Si a <0; 0, Si a =0}
Propiedades del Valor Absoluto
Propiedad 1
∀x, x ∈ R: |x| ≥ 0
Propiedad 2
Si x ∈ R: |x|=0, entonces x=0
Propiedad 3
Si x ∈ R, y ∈ R, entonces |x+y|=|x||y|
Propiedad 4
∀x, x ∈ R: |-x|=|x|
Propiedad 5
Si x ∈ R, y ≠ 0, entonces |x/y|=|x|/|y|
Propiedad 6
∀x, x ∈ R: |x|^2=x^2
Propiedad 7
Sea x una variable real y k un numero real positivo: |x|=k ⇔ x=k ó x=-k
Propiedad 8
Sea x una variable real y k un numero real positivo: |x|<k ⇔ -k < x < k
Propiedad 9
Sea x una variable real y k un numero real positivo: |x|>k ⇔ -k > x > k
Propiedad 10
∀x, x ∈ R: -|x| ≤ x ≤ |x|
Propiedad 11
Si x ∈ R, y ∈ R, entonces |x+y| ≤ |x|+|y|
Propiedad 12
|ax+b| ≤ c y c ≥ 0. si y sólo si -c ≤ ax +b ≤ c.
Propiedad 13
|ax+b| ≥ c si y sólo si ax + b ≥ c v ax +b ≤ -c
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