即整理可得 x2+y2−
2(1−λ) |
1+λ |
2(5+λ) |
1+λ |
8(3+λ) |
1+λ |
1 |
1+λ |
1 |
1+λ |
2+5λ |
1+λ |
所以可知圆心坐标为 (
1 |
2(1+λ) |
1 |
2(1+λ) |
因为圆心在直线3x+4y-1=0上,
所以可得3×
1 |
2(1+λ) |
1 |
2(1+λ) |
解得λ=-
3 |
2 |
将λ=-
3 |
2 |
故答案为:x2+y2+2x-2y-11=0.
2(1−λ) |
1+λ |
2(5+λ) |
1+λ |
8(3+λ) |
1+λ |
1 |
1+λ |
1 |
1+λ |
2+5λ |
1+λ |
1 |
2(1+λ) |
1 |
2(1+λ) |
1 |
2(1+λ) |
1 |
2(1+λ) |
3 |
2 |
3 |
2 |