halla el valor en cada caso por fa ayúdenme
Respuestas a la pregunta
a. Det (D)
[ x - y = 6
[ 2x + y = 4
EXPLICACIÓN:
[ x - y = 6
[ 2x + = 4
[ x - y = 6
[ 2x + = 4
2 (y + 6) + y = 4
y = — 8/3
x = — 8/3 + 6
x = 10/3
x = 10/3, y = — 8/3
RESULTADO:
X = 10/3, Y = — 8/3
b. Det (D)
[ -x + 3y = 7
[ 5x + 4y = —1
[ -x + 3y = 7
[ 5x + 4y = —1
[ -x + 3y = 7
[ 5x + 4y = —1
—5 (3y - 7) + 4y = —1
y = 36/11
x = 3x 36/11 - 7
x = 108/11 - 7
x = 31/11
x = 31/11, y = 36/11
RESULTADO:
X = 31/11, Y = 36/11
c. Det (D)
[-2x + 4y = —4
[3x - 5y = 15
[-2x + 4y = —4
[3x - 5y = 15
[-2× + 4y = —4
[3x - 5y = 15
3 (2y + 2) — 5y = 15
y = 9
x = 2 x 9 + 2
x = 20
x = 20, y = 9
RESULTADO:
X = 20, Y = 9
d. Det (D)
[ 2x + 3x = 0
[ — x —2y = —1
[ 2x + 3x = 0
[ — x —2y = —1
[ 2x + 3x = 0
[ — x —2y = —1
— ( — 3/2y) — 2y = —1
y = 2
x = — 3/2 x 2
x = —3
x = —3, y = 2
RESULTADO:
X = —3, Y = 2
e. Det (D)
[ 3x + 2y = 0
[ 4x - y = 1
[ 3x + 2y = 0
[ 4x - y = 1
[ 3x + 2y = 0
[ 4x - y = 1
4 x ( — 2/3y ) — y = 1
y = — 3/11
x = — 2/3 x ( — 3/11 )
x = 2/11
x = 2/11, y = — 3/11
RESULTADO:
X = 2/11, Y = —3/11
RESPUESTA: ESPERO HABERTE AYUDADO