Mavzu: Chiziqli (linear) tenglamar sistemasi Qo’shish usuli

Mavzu: Chiziqli (linear) tenglamar sistemasi

1. 
   Qo’shish usuli:
   
2. 
   x+y+x-y=8+4 2x=12 x=6, y=2
   
3. 
   
   
4. 
   -3y=-20 3y=20 y=20/3
   
5. 
   −20/3 2x=24/3-20/3=4/3 x=2/3
   

2. O’rniga qo’yish usuli: =2+4=6

=6-10=-4 x=-1


=

Xususiy hollar:

1. 
   Yechimi cheksiz kop
   

yechimi cheksiz kop

2. 
   yechimi yoq;
   

0*y=19 yechimga ega emas