3. f(x, v) “ f(ax ł by + c\ b ?- O
/=-sj2x+3y-l
ax f 6v + c -1 2x ł 3 v -1 -1
2 + 3 v*—0 -1'
'f-2-= I-
3 3
~ 3dx
-Jt
2-ft = 3x+C 3v + ('
-s]t =—--
2
_ (3.T + C)-
4
3
2x+3y~l =
{ix +Cf
3y = * - 2x+i
(3x + Cf 2x I
y sr -i...........i......— -...... -f —