https://www.youtube.com/watch?v=YW3aNKVMv8U

valores x y

4 6

coeficientesx y ti igual a

2 3 -27 0 7 -3 -9 0

ec1: x+6y=27

ec2: 7x-3y=9

ec1: x+6y-27=0ec2: 7x-3y-9=0

valores x y z

2 2 3

coeficientesx y z ti igual a

1 4 -1 -6 0 2 5 -7 9 0 3 -2 1 -2 2

ec1: x+4y-z=6ec2: 2x+5y-7z=-9ec3: 3x-2y+z=2

ec1: x+4y-z-6=0ec2: 2x+5y-7z+9=0ec3: 3x-2y+z-2=0

Matrices 2

2*i1-7*i2+8*i3=120 5 5*i1+9*i2-12*i3=0 1 i1-9*i2-4*i3=-50 A 3*3

A*I=C

matriz inversa INVERSA (A)*C=I

0.1855670 0.1288660 -0.0154639 -0.0103093 0.0206186 -0.0824742 0.0695876 -0.0141753 -0.0682990 F2+CTR,SHIFT+ ENTER

RESULTADOi1 23.041 120 i2 2.887 0 i3 11.765 -50

https://www.youtube.com/watch?v=OKs93QHSOKA

-7 8 i1 120

9 -12 i2 0 -9 -4 i3 -50

A 3*3 i CA*I=C

INVERSA (A)*C=I

F2+CTR,SHIFT+ ENTER