| ||
2 |
x2 |
a2 |
y2 |
b2 |
x2 |
a2 |
y2 |
b2 |
|
x2 |
8 |
y2 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
y1-1 |
x1-2 |
y2-1 |
x2-2 |
| ||
x1-2 |
| ||
x2-2 |
| ||
x1-2 |
| ||
x2-2 |
1 |
x1-2 |
1 |
x2-2 |
x1+x2-4 |
x1x2-2(x1+x2)+4 |
-2m-4 |
2m2-4-2(-2m)+4 |
2m2+4m |
2m2+4m |
x2 |
16 |
y2 |
9 |
x2 |
a2 |
y2 |
b2 |
| ||
3 |
| ||
2 |
2 |
5-
|
A.-1≤m<2 | B.-2
| ||||
C.-2≤m<2或m=5 | D.-2
|
x2 |
a2 |
y2 |
b2 |
| ||
2 |
© 2017-2019 超级试练试题库,All Rights Reserved.