1 |
2 |
3 |
2 |
PA |
PB |
OP |
b2 |
a2 |
1 |
4 |
1 |
a2 |
9 |
4b2 |
x2 |
4 |
y2 |
3 |
PA |
PB |
OP |
3 |
2 |
|
x12 |
4 |
y12 |
3 |
x22 |
4 |
y22 |
3 |
y2-y1 |
x2-x1 |
3 |
4 |
x1+x2 |
y1+y2 |
3 |
4 |
2+m | ||
3+
|
1 |
2 |
1 |
2 |
1+
|
3(4-t2) |
| ||
2 |
4-t2 |
|4-2t| | ||
|
| ||
2 |
4-t2 |
1 |
2 |
3(2-t)3(2+t) |
9 |
2 |
3 |
2 |
3m |
2 |
3 |
2 |
A.30° | B.45° | C.60° | D.90° |
A.4x-3y+13=0 | B.4x+3y+13=0 | C.4x-y+1=0 | D.4x+3y-13=0 |
3 |
A.
| B.
| C.
| D.
|
A.(-2
| B.(-
| C.(-
| D.(-
|
© 2017-2019 超级试练试题库,All Rights Reserved.