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2009-10-12T22:29:37+02:00
C)6x+7y=3 /*4
8x-6y=-4 /*3
24x+28y=12
24x-18y=-12
10y=0
y=0
6x+0=3
x=1/2
d)2x-2=3y
3y+3=2x
2x-3y=2
-2x+3y=-3
0=-1 ukl.sprzeczny
2009-10-12T22:38:41+02:00
C)

{6x+7y=3 /*4
{8x-6y=-4 /*3

{24x+28y=12
+{24x-18y=-12
________________
10y=0
{y=0
{6x+0=3/6

{y=0
{x=1/2






d)

{2 (x-1) = 3y
{3 (y +1) = 2x

{2x-2=3y
{3y+3=2x

{2x-3y=2
+{-2x+3y=-3
___________
0≠-1 Układ równań sprzeczny