1 |
2 |
x1+x2 |
2 |
1 |
2 |
1 |
2 |
x1+x2 |
2 |
1 |
2 |
x1+x2 |
2 |
x1+x2 |
2 |
x12 |
2 |
x22 |
2 |
x1+x2 |
2 |
1 |
4 |
1 |
4 |
1 |
2 |
x1+x2 |
2 |
b |
2a |
4ac-b2 |
4a |
1 |
2 |
|
1 |
4 |
1 |
2 |
1 |
4 |
1 |
2 |
1 |
4 |
1 |
2 |
1 |
4 |
1 |
4 |
1 |
4 |
1 |
2 |
A.y=2x | B.y=x2 | C.y=2x | D.y=log3x |
A.f(-1)<f(-3) | B.f(0)>f(1) | C.f(2)>f(3) | D.f(-3)<f(5) |
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