2x-y-1=0
y=2x-1
代人x^2-y^2=-1得:
x^2-(2x-1)^2=-1
3x^2-4x=0
x1=0,x2=4/3
代回y=2x-1得:
y1=-1,y2=5/3
所以,解为:
x1=0,y1=-1
或,x2=4/3,y2=5/3
2x-y-1=0
y=2x-1
代人x^2-y^2=-1得:
x^2-(2x-1)^2=-1
3x^2-4x=0
x1=0,x2=4/3
代回y=2x-1得:
y1=-1,y2=5/3
所以,解为:
x1=0,y1=-1
或,x2=4/3,y2=5/3