Solve by Cramers rule
Attachments:
Answers
Answered by
1
3x-2y=5/2 ...............(1)
1/3x+3y=-4/3 ...............(2)
D=|a1 b1 |
|a2 b2 |
=| 3 -2 |
|1/3 3 |
=3*3-(-2)*1/3
= 9+2/3
=9/1*3+2/3
=27/3+2/3
=29/3
Dx = 5/2 -2
-4/3 3
= 5/2*3-(-2)*(-4\3)
= 15/2 *3 -2*4/3 *2
=45/6-16/6
=29/6
Dy = 3*(-4\3) - 1/3*5/2
=-12/3-5/6
= -4/1*6-5/6
=-24/6-5/6
=-29/6
x = Dx/D
= 29/6/29/3
=29/6*3/29
=2
Y = -29/6/29/3
= -29/6*3/29
= 2
1/3x+3y=-4/3 ...............(2)
D=|a1 b1 |
|a2 b2 |
=| 3 -2 |
|1/3 3 |
=3*3-(-2)*1/3
= 9+2/3
=9/1*3+2/3
=27/3+2/3
=29/3
Dx = 5/2 -2
-4/3 3
= 5/2*3-(-2)*(-4\3)
= 15/2 *3 -2*4/3 *2
=45/6-16/6
=29/6
Dy = 3*(-4\3) - 1/3*5/2
=-12/3-5/6
= -4/1*6-5/6
=-24/6-5/6
=-29/6
x = Dx/D
= 29/6/29/3
=29/6*3/29
=2
Y = -29/6/29/3
= -29/6*3/29
= 2
Similar questions