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1 of 5
2 3
5 2
2 3
5 2
= 2 π‘₯ 2 βˆ’
4 βˆ’ 15
βˆ’11
MATRICES Y DETERMINANTES
5 π‘₯ 3
2 8
1 βˆ’2
2 8
1 βˆ’2
= 2 π‘₯ (βˆ’2) βˆ’
βˆ’4 βˆ’ 8
βˆ’12
MATRICES Y DETERMINANTES
8 π‘₯ 1
3 βˆ’1
βˆ’2 βˆ’3
1
6
3 βˆ’1
βˆ’2 βˆ’3
= 3 π‘₯ (βˆ’3) βˆ’
βˆ’9 βˆ’ 2 = βˆ’9 βˆ’ 2
βˆ†= βˆ’11
MATRICES Y DETERMINANTES
3π‘₯ βˆ’ 1𝑦 = 1
βˆ’2π‘₯ βˆ’ 3𝑦 = 6
Encontrar valor general
Encontrar valor para x
1 βˆ’1
6 βˆ’3
= 1 π‘₯ (βˆ’3) βˆ’
βˆ’3 βˆ’ βˆ’6 = βˆ’3 + 6
βˆ†1 = 3
Encontrar valor para y
3 1
βˆ’2 6
= 3 π‘₯ 6 βˆ’
18 βˆ’ βˆ’2 = 18 + 2
βˆ†2 =20
βˆ’1 π‘₯(βˆ’2)
βˆ’1 π‘₯ 6
1 π‘₯(βˆ’2)
3 βˆ’1
βˆ’2 βˆ’3
1
6
3 βˆ’1
βˆ’2 βˆ’3
= βˆ†
MATRICES Y DETERMINANTES
3π‘₯ βˆ’ 1𝑦 = 1
βˆ’2π‘₯ βˆ’ 3𝑦 = 6
1 βˆ’1
6 βˆ’3
= βˆ†1
3 1
βˆ’2 6
= βˆ†2
π‘₯ =
βˆ†1
βˆ†
=
3
βˆ’11
𝑦 =
βˆ†2
βˆ†
=
20
βˆ’11
MATRICES Y DETERMINANTES
3π‘₯ βˆ’ 1𝑦 = 1 (1)
βˆ’2π‘₯ βˆ’ 3𝑦 = 6 (2)
Despejando y en (1)
3π‘₯ βˆ’ 1𝑦 = 1
3π‘₯ βˆ’ 1𝑦 = 1 βˆ’ 1
βˆ’3π‘₯ + 1𝑦 = βˆ’1
𝑦 = βˆ’1 + 3π‘₯
Sustituyendo y= -1 + 3x en (2)
βˆ’2π‘₯ βˆ’ 3𝑦 = 6
βˆ’2π‘₯ βˆ’ 3(βˆ’1 + 3π‘₯) = 6
βˆ’2π‘₯ + 3 βˆ’ 9π‘₯ = 6
βˆ’2π‘₯ βˆ’ 9π‘₯ = 6 βˆ’ 3
βˆ’11π‘₯ = 3
π‘₯ =
3
βˆ’11
Sustituyendo x en y= -1 + 3x
𝑦 = βˆ’1 + 3π‘₯
𝑦 = βˆ’1 + (3)
3
βˆ’11
𝑦 = βˆ’1 +
9
βˆ’11
𝑦 = βˆ’1 βˆ’
9
11
π‘₯ = βˆ’
3
11
𝑦 = βˆ’
11
11
βˆ’
9
11
=
βˆ’20
11
𝑦 = βˆ’
20
11

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matrices y determinantes 2x2.pptx

  • 1. 2 3 5 2 2 3 5 2 = 2 π‘₯ 2 βˆ’ 4 βˆ’ 15 βˆ’11 MATRICES Y DETERMINANTES 5 π‘₯ 3
  • 2. 2 8 1 βˆ’2 2 8 1 βˆ’2 = 2 π‘₯ (βˆ’2) βˆ’ βˆ’4 βˆ’ 8 βˆ’12 MATRICES Y DETERMINANTES 8 π‘₯ 1
  • 3. 3 βˆ’1 βˆ’2 βˆ’3 1 6 3 βˆ’1 βˆ’2 βˆ’3 = 3 π‘₯ (βˆ’3) βˆ’ βˆ’9 βˆ’ 2 = βˆ’9 βˆ’ 2 βˆ†= βˆ’11 MATRICES Y DETERMINANTES 3π‘₯ βˆ’ 1𝑦 = 1 βˆ’2π‘₯ βˆ’ 3𝑦 = 6 Encontrar valor general Encontrar valor para x 1 βˆ’1 6 βˆ’3 = 1 π‘₯ (βˆ’3) βˆ’ βˆ’3 βˆ’ βˆ’6 = βˆ’3 + 6 βˆ†1 = 3 Encontrar valor para y 3 1 βˆ’2 6 = 3 π‘₯ 6 βˆ’ 18 βˆ’ βˆ’2 = 18 + 2 βˆ†2 =20 βˆ’1 π‘₯(βˆ’2) βˆ’1 π‘₯ 6 1 π‘₯(βˆ’2)
  • 4. 3 βˆ’1 βˆ’2 βˆ’3 1 6 3 βˆ’1 βˆ’2 βˆ’3 = βˆ† MATRICES Y DETERMINANTES 3π‘₯ βˆ’ 1𝑦 = 1 βˆ’2π‘₯ βˆ’ 3𝑦 = 6 1 βˆ’1 6 βˆ’3 = βˆ†1 3 1 βˆ’2 6 = βˆ†2 π‘₯ = βˆ†1 βˆ† = 3 βˆ’11 𝑦 = βˆ†2 βˆ† = 20 βˆ’11
  • 5. MATRICES Y DETERMINANTES 3π‘₯ βˆ’ 1𝑦 = 1 (1) βˆ’2π‘₯ βˆ’ 3𝑦 = 6 (2) Despejando y en (1) 3π‘₯ βˆ’ 1𝑦 = 1 3π‘₯ βˆ’ 1𝑦 = 1 βˆ’ 1 βˆ’3π‘₯ + 1𝑦 = βˆ’1 𝑦 = βˆ’1 + 3π‘₯ Sustituyendo y= -1 + 3x en (2) βˆ’2π‘₯ βˆ’ 3𝑦 = 6 βˆ’2π‘₯ βˆ’ 3(βˆ’1 + 3π‘₯) = 6 βˆ’2π‘₯ + 3 βˆ’ 9π‘₯ = 6 βˆ’2π‘₯ βˆ’ 9π‘₯ = 6 βˆ’ 3 βˆ’11π‘₯ = 3 π‘₯ = 3 βˆ’11 Sustituyendo x en y= -1 + 3x 𝑦 = βˆ’1 + 3π‘₯ 𝑦 = βˆ’1 + (3) 3 βˆ’11 𝑦 = βˆ’1 + 9 βˆ’11 𝑦 = βˆ’1 βˆ’ 9 11 π‘₯ = βˆ’ 3 11 𝑦 = βˆ’ 11 11 βˆ’ 9 11 = βˆ’20 11 𝑦 = βˆ’ 20 11