Question

默默耕耘

求解

4. A=
A=[31]特20x2
Xazty
变换:
2X-3y=-10

Answer 1

qn

x=t+2, y=t
[ 2 1 ][ t+2 ]=[ 2(t+2)+t ]=[ 3t+4 ]
[ 3 -1 ][ t ] [ 3(t+2)-t ] [ 2t+6 ]
L': x=3t+4, y=2t+6
→2x-3y=(6t+8)-(6t+18)=-10