Odpowiedzi

2009-12-01T20:25:09+01:00
A) {2x - 1,1y = 0,7
{0,5x + 1,1y =4,3
2,5x=5
x=2 y=3

b) {x - 2y = 4
{-x + 3y = 0
y=4 x=12

c) {5x +3y = 0
{-x - 2y =7 /*5
{5x+3y=0
{-5x-10y=35
-7y=35
y=-5 x=3

d) {3u + 2v =2 /*(-2)
{5u + 4v =6
{-6u-4v=-4
{5u + 4v =6
-u=2
u=-2 v=4