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Curso:
ÁLGEBRA
Tema:
REPASO
Grado: Semana:
SEGUNDO 40
DESIGUALDA
DES
SEMANA 36
EJERCICIO 1 : 𝑆𝑖: −1 ≤ 𝑥 < 3
𝐼𝑛𝑑𝑖𝑐𝑎𝑟 𝑙𝑎 𝑣𝑎𝑟𝑖𝑎𝑐𝑖ó𝑛 𝑑𝑒 𝐸 = 𝑥 + 3
RESOLUCIÓN :
EJERCICIO 2 : 𝑆𝑖: −5 < 𝑥 ≤ 4
𝐼𝑛𝑑𝑖𝑐𝑎𝑟 𝑙𝑎 𝑣𝑎𝑟𝑖𝑎𝑐𝑖ó𝑛 𝑑𝑒: 𝑀 = 3𝑥 + 5
RESOLUCIÓN :
EJERCICIO 3: 𝑆𝑖: −20 ≤ 2𝑥 ≤ 8
𝐼𝑛𝑑𝑖𝑐𝑎𝑟 𝑙𝑎 𝑣𝑎𝑟𝑖𝑎𝑐𝑖ó𝑛 𝑑𝑒 ∶ 𝑀 = −3𝑥
RESOLUCIÓN :
EJERCICIO 4 :
¿ 𝐶𝑢á𝑛𝑡𝑜𝑠 𝑛ú𝑚𝑒𝑟𝑜𝑠 𝑒𝑛𝑡𝑒𝑟𝑜𝑠 ∶ 𝑃 𝑥 = 3 − 𝑥 ; 𝑒𝑥𝑖𝑠𝑡𝑒𝑛 𝑠𝑖 𝑠𝑒 𝑠𝑎𝑏𝑒 𝑞𝑢𝑒 ∶ 2 < 𝑥 ≤ 7 ?
RESOLUCIÓN :
EJERCICIO 5 : 𝑆𝑖: −2 < 𝑥 ≤ 2
𝐼𝑛𝑑𝑖𝑐𝑎𝑟 𝑙𝑎 𝑣𝑎𝑟𝑖𝑎𝑐𝑖ó𝑛 𝑑𝑒 𝐾 =
10
3 − 𝑋
RESOLUCIÓN :
EJERCICIO 6 : 𝑆𝑖 ∶ 5 ≤
𝑥 − 1
𝑥 + 2
≤ 12
𝐼𝑛𝑑𝑖𝑐𝑎𝑟 𝑙𝑎 𝑣𝑎𝑟𝑖𝑎𝑐𝑖ó𝑛 𝑑𝑒 "𝑥"
RESOLUCIÓN :
SEMANA 37
EJERCICIO 1 :
RESOLUCIÓN :
𝑆𝑖: 𝐴 = −5; 8 ∪ 10; +∞ 𝐵 = 1; 17
𝐷𝑒𝑡𝑒𝑟𝑚𝑖𝑛𝑒: 𝐴 ∩ 𝐵
EJERCICIO 2 : 𝑅𝑒𝑙𝑎𝑐𝑖𝑜𝑛𝑎𝑟 𝑐𝑜𝑟𝑟𝑒𝑐𝑡𝑎𝑚𝑒𝑛𝑡𝑒:
RESOLUCIÓN :
−𝟓 ≤ 𝒙 < 𝟕 A
−𝟐; 𝟕 B
𝒙 ≤ 𝟕 C
−𝟓; 𝟐 D
−5 2
−5 7
−2 7
7
EJERCICIO 3:
RESOLUCIÓN :
𝑆𝑖 ∶ 𝑥 ∈ −7; 2 , 𝑒𝑛𝑡𝑜𝑛𝑐𝑒𝑠 𝑟𝑒𝑝𝑟𝑒𝑠𝑒𝑛𝑡𝑎𝑟 𝑔𝑟á𝑓𝑖𝑐𝑎𝑚𝑒𝑛𝑡𝑒 𝑒𝑙 𝑖𝑛𝑡𝑒𝑟𝑣𝑎𝑙𝑜 𝑑𝑒 ∶ 𝐸 = 𝑥 + 4
EJERCICIO 4 :
RESOLUCIÓN :
𝑆𝑖 ∶ 5 − 𝑥 ∈ 1; 7 , 𝑒𝑛𝑡𝑜𝑛𝑐𝑒𝑠 𝑟𝑒𝑝𝑟𝑒𝑠𝑒𝑛𝑡𝑎𝑟 𝑔𝑟á𝑓𝑖𝑐𝑎𝑚𝑒𝑛𝑡𝑒 𝑒𝑙 𝑖𝑛𝑡𝑒𝑟𝑣𝑎𝑙𝑜 𝑑𝑒 ∶ 𝑀 = 𝑥2 − 1
EJERCICIO 5 :
RESOLUCIÓN :
𝑆𝑖 ∶ 𝐴 = −6; −3 ∪ 3; 7
𝐵 = −∞; −4 ∪ 3; +∞
𝐻𝑎𝑙𝑙𝑎𝑟 ∶ 𝐴 ∪ 𝐵
EJERCICIO 6 :
RESOLUCIÓN :
𝐸𝑛 𝑐𝑎𝑑𝑎 𝑐𝑎𝑠𝑜 ℎ𝑎𝑙𝑙𝑎 ∶ 𝐴 ∩ 𝐵
𝑎)
−∞ +∞
+∞ +∞
+∞
−∞ −∞
+∞
−∞ −∞
−4
7
0 5
−2 7
𝑑)
𝐴
𝐵
𝐴
−7 0 4 6
𝑏)
−3
𝐵
𝐴
𝑒)
−1 1
𝐴
𝐵
𝑐)
0 5 7
𝐴
𝐵
𝐵
SEMANA 38
EJERCICIO 1:
RESOLUCIÓN
𝑰𝒏𝒅𝒊𝒒𝒖𝒆 𝒆𝒍 𝒊𝒏𝒕𝒆𝒓𝒗𝒂𝒍𝒐 𝒔𝒐𝒍𝒖𝒄𝒊ó𝒏 𝒅𝒆:
𝒂)
𝟐𝒙
𝟑
− 𝟏 <
𝟏
𝟔
𝒃)
𝟐 − 𝒙
𝟑
≥
𝟏
𝟐
EJERCICIO 2:
RESOLUCIÓN
𝑰𝒏𝒅𝒊𝒄𝒂𝒓 𝒗𝒆𝒓𝒅𝒂𝒅𝒆𝒓𝒐 𝑽 𝒐 𝒇𝒂𝒍𝒔𝒐 𝒇 𝒆𝒏 𝒍𝒂𝒔 𝒔𝒊𝒈𝒖𝒊𝒆𝒏𝒕𝒆𝒔 𝒑𝒓𝒐𝒑𝒐𝒔𝒊𝒄𝒊𝒐𝒏𝒆𝒔
𝑰. 𝟕 ≤ 𝒙 + 𝟒 < 𝟏𝟏 ⇒ 𝒙 ∈ 𝟑; 𝟕
𝑰𝑰. 𝟐 < 𝒙 − 𝟐 < 𝟓 ⇒ 𝒙 ∈ 𝟒; 𝟕
𝑰𝑰𝑰. 𝟒 <
𝟑𝒙 + 𝟓
𝟐
≤ 𝟕 ⇒ 𝒙 ∈ 𝟏; 𝟑
EJERCICIO 3:
RESOLUCIÓN
𝑹𝒆𝒔𝒐𝒍𝒗𝒆𝒓:
𝟑 𝒙 + 𝟏 𝒙 − 𝟏 − 𝟐 𝒙 + 𝟐 𝒙 − 𝟐 ≥ 𝒙 − 𝟏 𝟐
¿ 𝑪𝒖á𝒍 𝒅𝒆 𝒍𝒐𝒔 𝒔𝒊𝒈𝒖𝒊𝒆𝒏𝒕𝒆𝒔 𝒗𝒂𝒍𝒐𝒓𝒆𝒔 𝒏𝒐 𝒆𝒔 𝒔𝒐𝒍𝒖𝒄𝒊ó𝒏 𝒑𝒂𝒓𝒂 𝒍𝒂 𝒊𝒏𝒆𝒄𝒖𝒂𝒄𝒊ó𝒏?
𝒂) − 𝟔 𝒃) − 𝟏 𝒄) 𝟏 𝒅) 𝟑 𝒆) 𝟔
EJERCICIO 4:
RESOLUCIÓN
𝑹𝒆𝒔𝒐𝒍𝒗𝒆𝒓 𝒆𝒍 𝒔𝒊𝒈𝒖𝒊𝒆𝒏𝒕𝒆 𝒔𝒊𝒔𝒕𝒆𝒎𝒂:
𝒙 + 𝟒 𝒙 − 𝟓 ≤ 𝒙 − 𝟏 𝒙 + 𝟐 … (𝑰)
𝒙 − 𝟐 𝒙 + 𝟐 ≤ 𝒙 + 𝟑 𝒙 − 𝟒 … (𝑰𝑰)
EJERCICIO 5:
RESOLUCIÓN
𝑯𝒂𝒍𝒍𝒆 𝒆𝒍 𝒄𝒐𝒏𝒋𝒖𝒏𝒕𝒐 𝒔𝒐𝒍𝒖𝒄𝒊ó𝒏 𝒅𝒆𝒍 𝒔𝒊𝒔𝒕𝒆𝒎𝒂 𝒅𝒆 𝒊𝒏𝒆𝒄𝒖𝒂𝒄𝒊𝒐𝒏𝒆𝒔
𝑰.
𝟐𝒙 + 𝟏
𝟑
≤ 𝒙 𝑰𝑰.
𝒙 − 𝟏
𝟐
< 𝒙 − 𝟑 𝑰𝑰𝑰.
𝒙 + 𝟑
𝟐
≥ 𝒙 − 𝟔
EJERCICIO 6:
RESOLUCIÓN
𝑹𝒆𝒔𝒐𝒍𝒗𝒆𝒓 𝒆𝒍 𝒔𝒊𝒔𝒕𝒆𝒎𝒂:
𝐼)
𝑥
2
−
𝑥 + 1
3
< 1
𝐼𝐼)
𝑥 − 3
2
+
𝑥
3
> 1
SEMANA 39
EJERCICIO 1:
RESOLUCIÓN
Representar gráficamente las siguientes expresiones:
a) −𝟑 < 𝒙 ≤ 𝟎 b) 𝟓 ≤ 𝒙 < 𝟏𝟐 c) −
𝟏
𝟓
< 𝒙 <
𝟏
𝟗
EJERCICIO 2:
RESOLUCIÓN
𝐑𝐞𝐬𝐨𝐥𝐯𝐞𝐫 𝐞𝐥 𝐬𝐢𝐬𝐭𝐞𝐦𝐚 𝐞𝐧 𝐞𝐧𝐭𝐞𝐫𝐨𝐬 𝐩𝐨𝐬𝐢𝐭𝐢𝐯𝐨𝐬:
𝐱 + 𝐲 < 𝟓
𝐱 − 𝐲 > 𝟏
𝐈𝐧𝐝𝐢𝐜𝐚𝐫 𝐱𝐲
……. (1)
……. (2)
EJERCICIO 3:
RESOLUCIÓN
𝐑𝐞𝐬𝐨𝐥𝐯𝐞𝐫 𝐞𝐧 𝐞𝐧𝐭𝐞𝐫𝐨𝐬 𝐩𝐨𝐬𝐢𝐭𝐢𝐯𝐨𝐬:
𝐱
𝟑
+
𝐲
𝟒
< 𝟐 … (𝟏)
𝐱
𝟑
−
𝐲
𝟒
> 𝟎 … (𝟐)
𝐲 > 𝟐
𝐈𝐧𝐝𝐢𝐜𝐚𝐫 𝐞𝐥 𝐯𝐚𝐥𝐨𝐫 𝐝𝐞 "𝐱𝟐 + 𝐲𝟐"
EJERCICIO 4:
RESOLUCIÓN
𝐑𝐞𝐬𝐨𝐥𝐯𝐞𝐫 𝐞𝐥 𝐬𝐢𝐬𝐭𝐞𝐦𝐚 𝐞𝐧 𝐞𝐧𝐭𝐞𝐫𝐨𝐬 ∶
𝟐𝐱 − 𝟒𝐲 > 𝟐𝟎
𝐱 + 𝟓𝐲 < −𝟒
𝐲 > −𝟒
𝐈𝐧𝐝𝐢𝐜𝐚𝐫 𝐞𝐥 𝐦𝐞𝐧𝐨𝐫 𝐯𝐚𝐥𝐨𝐫 𝐝𝐞: (𝐱𝐲)
……. (1)
……. (2)
……. (3)
EJERCICIO 5:
RESOLUCIÓN
Mathias 𝐭𝐢𝐞𝐧𝐞 𝐜𝐢𝐞𝐫𝐭𝐚 𝐜𝐚𝐧𝐭𝐢𝐝𝐚𝐝 𝐝𝐞 𝐝𝐢𝐧𝐞𝐫𝐨, 𝐠𝐚𝐬𝐭𝐚 𝟏𝟐𝟎 𝐬𝐨𝐥𝐞𝐬 𝐲 𝐥𝐨 𝐪𝐮𝐞 𝐥𝐞 𝐪𝐮𝐞𝐝𝐚
𝐞𝐬 𝐦á𝐬 𝐪𝐮𝐞 𝐥𝐨𝐬
𝟐
𝟑
𝐝𝐞 𝐥𝐨 𝐪𝐮𝐞 𝐭𝐞𝐧𝐢𝐚 𝐢𝐧𝐢𝐜𝐢𝐚𝐥𝐦𝐞𝐧𝐭𝐞; 𝐠𝐚𝐬𝐭𝐚 𝐥𝐮𝐞𝐠𝐨 𝐥𝐚 𝐦𝐢𝐭𝐚𝐝 𝐲 𝐞𝐥 saldo es
𝐦𝐞𝐧𝐨𝐫 𝐪𝐮𝐞 𝟏𝟑𝟎 𝐬𝐨𝐥𝐞𝐬. ¿ 𝐂𝐮á𝐧𝐭𝐨 𝐭𝐞𝐧í𝐚 𝐢𝐧𝐢𝐜𝐢𝐚𝐥𝐦𝐞𝐧𝐭𝐞, 𝐬𝐢 𝐞𝐬𝐞 𝐦𝐨𝐧𝐭𝐨 𝐞𝐬 𝐦ú𝐥𝐭𝐢𝐩𝐥𝐨 𝐝𝐞 𝟏𝟎?
EJERCICIO 6:
RESOLUCIÓN
𝐒𝐞 𝐜𝐨𝐦𝐩𝐫𝐚: 𝟐𝟎𝐱 𝐧𝐚𝐫𝐚𝐧𝐣𝐚𝐬, ; 𝐬𝐢 𝐬𝐞 𝐯𝐞𝐧𝐝𝐞 𝐥𝐚𝐬 𝐭𝐫𝐞𝐬 𝐜𝐮𝐚𝐫𝐭𝐚𝐬 𝐩𝐚𝐫𝐭𝐞𝐬, 𝐪𝐮𝐞𝐝𝐚𝐧 𝐦𝐞𝐧𝐨𝐬 𝐝𝐞 𝟏𝟏𝟎
𝐩𝐨𝐫 𝐯𝐞𝐧𝐝𝐞𝐫 𝐲 𝐬𝐢 𝐬𝐞 𝐯𝐞𝐧𝐝𝐢𝐞𝐫𝐚 𝐥𝐚 𝐪𝐮𝐢𝐧𝐭𝐚 𝐩𝐚𝐫𝐭𝐞 𝐪𝐮𝐞𝐝𝐚𝐫𝐢𝐚 𝐦𝐚𝐬 𝐝𝐞 𝟑𝟐𝟎 𝐩𝐨𝐫 𝐯𝐞𝐧𝐝𝐞𝐫.
¿ 𝐂𝐮á𝐧𝐭𝐚𝐬 𝐦𝐚𝐧𝐳𝐚𝐧𝐚𝐬 𝐬𝐞 𝐜𝐨𝐦𝐩𝐫𝐚𝐫𝐨𝐧?

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X-2do-Repaso (Sin solucionario).pptx

  • 3. EJERCICIO 1 : 𝑆𝑖: −1 ≤ 𝑥 < 3 𝐼𝑛𝑑𝑖𝑐𝑎𝑟 𝑙𝑎 𝑣𝑎𝑟𝑖𝑎𝑐𝑖ó𝑛 𝑑𝑒 𝐸 = 𝑥 + 3 RESOLUCIÓN :
  • 4. EJERCICIO 2 : 𝑆𝑖: −5 < 𝑥 ≤ 4 𝐼𝑛𝑑𝑖𝑐𝑎𝑟 𝑙𝑎 𝑣𝑎𝑟𝑖𝑎𝑐𝑖ó𝑛 𝑑𝑒: 𝑀 = 3𝑥 + 5 RESOLUCIÓN :
  • 5. EJERCICIO 3: 𝑆𝑖: −20 ≤ 2𝑥 ≤ 8 𝐼𝑛𝑑𝑖𝑐𝑎𝑟 𝑙𝑎 𝑣𝑎𝑟𝑖𝑎𝑐𝑖ó𝑛 𝑑𝑒 ∶ 𝑀 = −3𝑥 RESOLUCIÓN :
  • 6. EJERCICIO 4 : ¿ 𝐶𝑢á𝑛𝑡𝑜𝑠 𝑛ú𝑚𝑒𝑟𝑜𝑠 𝑒𝑛𝑡𝑒𝑟𝑜𝑠 ∶ 𝑃 𝑥 = 3 − 𝑥 ; 𝑒𝑥𝑖𝑠𝑡𝑒𝑛 𝑠𝑖 𝑠𝑒 𝑠𝑎𝑏𝑒 𝑞𝑢𝑒 ∶ 2 < 𝑥 ≤ 7 ? RESOLUCIÓN :
  • 7. EJERCICIO 5 : 𝑆𝑖: −2 < 𝑥 ≤ 2 𝐼𝑛𝑑𝑖𝑐𝑎𝑟 𝑙𝑎 𝑣𝑎𝑟𝑖𝑎𝑐𝑖ó𝑛 𝑑𝑒 𝐾 = 10 3 − 𝑋 RESOLUCIÓN :
  • 8. EJERCICIO 6 : 𝑆𝑖 ∶ 5 ≤ 𝑥 − 1 𝑥 + 2 ≤ 12 𝐼𝑛𝑑𝑖𝑐𝑎𝑟 𝑙𝑎 𝑣𝑎𝑟𝑖𝑎𝑐𝑖ó𝑛 𝑑𝑒 "𝑥" RESOLUCIÓN :
  • 10. EJERCICIO 1 : RESOLUCIÓN : 𝑆𝑖: 𝐴 = −5; 8 ∪ 10; +∞ 𝐵 = 1; 17 𝐷𝑒𝑡𝑒𝑟𝑚𝑖𝑛𝑒: 𝐴 ∩ 𝐵
  • 11. EJERCICIO 2 : 𝑅𝑒𝑙𝑎𝑐𝑖𝑜𝑛𝑎𝑟 𝑐𝑜𝑟𝑟𝑒𝑐𝑡𝑎𝑚𝑒𝑛𝑡𝑒: RESOLUCIÓN : −𝟓 ≤ 𝒙 < 𝟕 A −𝟐; 𝟕 B 𝒙 ≤ 𝟕 C −𝟓; 𝟐 D −5 2 −5 7 −2 7 7
  • 12. EJERCICIO 3: RESOLUCIÓN : 𝑆𝑖 ∶ 𝑥 ∈ −7; 2 , 𝑒𝑛𝑡𝑜𝑛𝑐𝑒𝑠 𝑟𝑒𝑝𝑟𝑒𝑠𝑒𝑛𝑡𝑎𝑟 𝑔𝑟á𝑓𝑖𝑐𝑎𝑚𝑒𝑛𝑡𝑒 𝑒𝑙 𝑖𝑛𝑡𝑒𝑟𝑣𝑎𝑙𝑜 𝑑𝑒 ∶ 𝐸 = 𝑥 + 4
  • 13. EJERCICIO 4 : RESOLUCIÓN : 𝑆𝑖 ∶ 5 − 𝑥 ∈ 1; 7 , 𝑒𝑛𝑡𝑜𝑛𝑐𝑒𝑠 𝑟𝑒𝑝𝑟𝑒𝑠𝑒𝑛𝑡𝑎𝑟 𝑔𝑟á𝑓𝑖𝑐𝑎𝑚𝑒𝑛𝑡𝑒 𝑒𝑙 𝑖𝑛𝑡𝑒𝑟𝑣𝑎𝑙𝑜 𝑑𝑒 ∶ 𝑀 = 𝑥2 − 1
  • 14. EJERCICIO 5 : RESOLUCIÓN : 𝑆𝑖 ∶ 𝐴 = −6; −3 ∪ 3; 7 𝐵 = −∞; −4 ∪ 3; +∞ 𝐻𝑎𝑙𝑙𝑎𝑟 ∶ 𝐴 ∪ 𝐵
  • 15. EJERCICIO 6 : RESOLUCIÓN : 𝐸𝑛 𝑐𝑎𝑑𝑎 𝑐𝑎𝑠𝑜 ℎ𝑎𝑙𝑙𝑎 ∶ 𝐴 ∩ 𝐵 𝑎) −∞ +∞ +∞ +∞ +∞ −∞ −∞ +∞ −∞ −∞ −4 7 0 5 −2 7 𝑑) 𝐴 𝐵 𝐴 −7 0 4 6 𝑏) −3 𝐵 𝐴 𝑒) −1 1 𝐴 𝐵 𝑐) 0 5 7 𝐴 𝐵 𝐵
  • 17. EJERCICIO 1: RESOLUCIÓN 𝑰𝒏𝒅𝒊𝒒𝒖𝒆 𝒆𝒍 𝒊𝒏𝒕𝒆𝒓𝒗𝒂𝒍𝒐 𝒔𝒐𝒍𝒖𝒄𝒊ó𝒏 𝒅𝒆: 𝒂) 𝟐𝒙 𝟑 − 𝟏 < 𝟏 𝟔 𝒃) 𝟐 − 𝒙 𝟑 ≥ 𝟏 𝟐
  • 18. EJERCICIO 2: RESOLUCIÓN 𝑰𝒏𝒅𝒊𝒄𝒂𝒓 𝒗𝒆𝒓𝒅𝒂𝒅𝒆𝒓𝒐 𝑽 𝒐 𝒇𝒂𝒍𝒔𝒐 𝒇 𝒆𝒏 𝒍𝒂𝒔 𝒔𝒊𝒈𝒖𝒊𝒆𝒏𝒕𝒆𝒔 𝒑𝒓𝒐𝒑𝒐𝒔𝒊𝒄𝒊𝒐𝒏𝒆𝒔 𝑰. 𝟕 ≤ 𝒙 + 𝟒 < 𝟏𝟏 ⇒ 𝒙 ∈ 𝟑; 𝟕 𝑰𝑰. 𝟐 < 𝒙 − 𝟐 < 𝟓 ⇒ 𝒙 ∈ 𝟒; 𝟕 𝑰𝑰𝑰. 𝟒 < 𝟑𝒙 + 𝟓 𝟐 ≤ 𝟕 ⇒ 𝒙 ∈ 𝟏; 𝟑
  • 19. EJERCICIO 3: RESOLUCIÓN 𝑹𝒆𝒔𝒐𝒍𝒗𝒆𝒓: 𝟑 𝒙 + 𝟏 𝒙 − 𝟏 − 𝟐 𝒙 + 𝟐 𝒙 − 𝟐 ≥ 𝒙 − 𝟏 𝟐 ¿ 𝑪𝒖á𝒍 𝒅𝒆 𝒍𝒐𝒔 𝒔𝒊𝒈𝒖𝒊𝒆𝒏𝒕𝒆𝒔 𝒗𝒂𝒍𝒐𝒓𝒆𝒔 𝒏𝒐 𝒆𝒔 𝒔𝒐𝒍𝒖𝒄𝒊ó𝒏 𝒑𝒂𝒓𝒂 𝒍𝒂 𝒊𝒏𝒆𝒄𝒖𝒂𝒄𝒊ó𝒏? 𝒂) − 𝟔 𝒃) − 𝟏 𝒄) 𝟏 𝒅) 𝟑 𝒆) 𝟔
  • 20. EJERCICIO 4: RESOLUCIÓN 𝑹𝒆𝒔𝒐𝒍𝒗𝒆𝒓 𝒆𝒍 𝒔𝒊𝒈𝒖𝒊𝒆𝒏𝒕𝒆 𝒔𝒊𝒔𝒕𝒆𝒎𝒂: 𝒙 + 𝟒 𝒙 − 𝟓 ≤ 𝒙 − 𝟏 𝒙 + 𝟐 … (𝑰) 𝒙 − 𝟐 𝒙 + 𝟐 ≤ 𝒙 + 𝟑 𝒙 − 𝟒 … (𝑰𝑰)
  • 21. EJERCICIO 5: RESOLUCIÓN 𝑯𝒂𝒍𝒍𝒆 𝒆𝒍 𝒄𝒐𝒏𝒋𝒖𝒏𝒕𝒐 𝒔𝒐𝒍𝒖𝒄𝒊ó𝒏 𝒅𝒆𝒍 𝒔𝒊𝒔𝒕𝒆𝒎𝒂 𝒅𝒆 𝒊𝒏𝒆𝒄𝒖𝒂𝒄𝒊𝒐𝒏𝒆𝒔 𝑰. 𝟐𝒙 + 𝟏 𝟑 ≤ 𝒙 𝑰𝑰. 𝒙 − 𝟏 𝟐 < 𝒙 − 𝟑 𝑰𝑰𝑰. 𝒙 + 𝟑 𝟐 ≥ 𝒙 − 𝟔
  • 22. EJERCICIO 6: RESOLUCIÓN 𝑹𝒆𝒔𝒐𝒍𝒗𝒆𝒓 𝒆𝒍 𝒔𝒊𝒔𝒕𝒆𝒎𝒂: 𝐼) 𝑥 2 − 𝑥 + 1 3 < 1 𝐼𝐼) 𝑥 − 3 2 + 𝑥 3 > 1
  • 24. EJERCICIO 1: RESOLUCIÓN Representar gráficamente las siguientes expresiones: a) −𝟑 < 𝒙 ≤ 𝟎 b) 𝟓 ≤ 𝒙 < 𝟏𝟐 c) − 𝟏 𝟓 < 𝒙 < 𝟏 𝟗
  • 25. EJERCICIO 2: RESOLUCIÓN 𝐑𝐞𝐬𝐨𝐥𝐯𝐞𝐫 𝐞𝐥 𝐬𝐢𝐬𝐭𝐞𝐦𝐚 𝐞𝐧 𝐞𝐧𝐭𝐞𝐫𝐨𝐬 𝐩𝐨𝐬𝐢𝐭𝐢𝐯𝐨𝐬: 𝐱 + 𝐲 < 𝟓 𝐱 − 𝐲 > 𝟏 𝐈𝐧𝐝𝐢𝐜𝐚𝐫 𝐱𝐲 ……. (1) ……. (2)
  • 26. EJERCICIO 3: RESOLUCIÓN 𝐑𝐞𝐬𝐨𝐥𝐯𝐞𝐫 𝐞𝐧 𝐞𝐧𝐭𝐞𝐫𝐨𝐬 𝐩𝐨𝐬𝐢𝐭𝐢𝐯𝐨𝐬: 𝐱 𝟑 + 𝐲 𝟒 < 𝟐 … (𝟏) 𝐱 𝟑 − 𝐲 𝟒 > 𝟎 … (𝟐) 𝐲 > 𝟐 𝐈𝐧𝐝𝐢𝐜𝐚𝐫 𝐞𝐥 𝐯𝐚𝐥𝐨𝐫 𝐝𝐞 "𝐱𝟐 + 𝐲𝟐"
  • 27. EJERCICIO 4: RESOLUCIÓN 𝐑𝐞𝐬𝐨𝐥𝐯𝐞𝐫 𝐞𝐥 𝐬𝐢𝐬𝐭𝐞𝐦𝐚 𝐞𝐧 𝐞𝐧𝐭𝐞𝐫𝐨𝐬 ∶ 𝟐𝐱 − 𝟒𝐲 > 𝟐𝟎 𝐱 + 𝟓𝐲 < −𝟒 𝐲 > −𝟒 𝐈𝐧𝐝𝐢𝐜𝐚𝐫 𝐞𝐥 𝐦𝐞𝐧𝐨𝐫 𝐯𝐚𝐥𝐨𝐫 𝐝𝐞: (𝐱𝐲) ……. (1) ……. (2) ……. (3)
  • 28. EJERCICIO 5: RESOLUCIÓN Mathias 𝐭𝐢𝐞𝐧𝐞 𝐜𝐢𝐞𝐫𝐭𝐚 𝐜𝐚𝐧𝐭𝐢𝐝𝐚𝐝 𝐝𝐞 𝐝𝐢𝐧𝐞𝐫𝐨, 𝐠𝐚𝐬𝐭𝐚 𝟏𝟐𝟎 𝐬𝐨𝐥𝐞𝐬 𝐲 𝐥𝐨 𝐪𝐮𝐞 𝐥𝐞 𝐪𝐮𝐞𝐝𝐚 𝐞𝐬 𝐦á𝐬 𝐪𝐮𝐞 𝐥𝐨𝐬 𝟐 𝟑 𝐝𝐞 𝐥𝐨 𝐪𝐮𝐞 𝐭𝐞𝐧𝐢𝐚 𝐢𝐧𝐢𝐜𝐢𝐚𝐥𝐦𝐞𝐧𝐭𝐞; 𝐠𝐚𝐬𝐭𝐚 𝐥𝐮𝐞𝐠𝐨 𝐥𝐚 𝐦𝐢𝐭𝐚𝐝 𝐲 𝐞𝐥 saldo es 𝐦𝐞𝐧𝐨𝐫 𝐪𝐮𝐞 𝟏𝟑𝟎 𝐬𝐨𝐥𝐞𝐬. ¿ 𝐂𝐮á𝐧𝐭𝐨 𝐭𝐞𝐧í𝐚 𝐢𝐧𝐢𝐜𝐢𝐚𝐥𝐦𝐞𝐧𝐭𝐞, 𝐬𝐢 𝐞𝐬𝐞 𝐦𝐨𝐧𝐭𝐨 𝐞𝐬 𝐦ú𝐥𝐭𝐢𝐩𝐥𝐨 𝐝𝐞 𝟏𝟎?
  • 29. EJERCICIO 6: RESOLUCIÓN 𝐒𝐞 𝐜𝐨𝐦𝐩𝐫𝐚: 𝟐𝟎𝐱 𝐧𝐚𝐫𝐚𝐧𝐣𝐚𝐬, ; 𝐬𝐢 𝐬𝐞 𝐯𝐞𝐧𝐝𝐞 𝐥𝐚𝐬 𝐭𝐫𝐞𝐬 𝐜𝐮𝐚𝐫𝐭𝐚𝐬 𝐩𝐚𝐫𝐭𝐞𝐬, 𝐪𝐮𝐞𝐝𝐚𝐧 𝐦𝐞𝐧𝐨𝐬 𝐝𝐞 𝟏𝟏𝟎 𝐩𝐨𝐫 𝐯𝐞𝐧𝐝𝐞𝐫 𝐲 𝐬𝐢 𝐬𝐞 𝐯𝐞𝐧𝐝𝐢𝐞𝐫𝐚 𝐥𝐚 𝐪𝐮𝐢𝐧𝐭𝐚 𝐩𝐚𝐫𝐭𝐞 𝐪𝐮𝐞𝐝𝐚𝐫𝐢𝐚 𝐦𝐚𝐬 𝐝𝐞 𝟑𝟐𝟎 𝐩𝐨𝐫 𝐯𝐞𝐧𝐝𝐞𝐫. ¿ 𝐂𝐮á𝐧𝐭𝐚𝐬 𝐦𝐚𝐧𝐳𝐚𝐧𝐚𝐬 𝐬𝐞 𝐜𝐨𝐦𝐩𝐫𝐚𝐫𝐨𝐧?