x | 20 |
a |
b |
a |
b |
A.1 | B.2 | C.3 | D.4 |
1+cos2ax |
2 |
1-cos2ax |
2 |
2π |
2|a| |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
x2 |
25 |
y2 |
9 |
x2 |
35 |
1 |
2 |
a |
b |
a |
b |
a |
b |
c |
a |
b |
c |
A.p假q真 | B.p真q假 | C.p真q真 | D.p假q假 |
x-2 |
1-x |
x1-x2 |
f(x1)-f(x2) |
A.-2≤m≤2 | B.m≥2 | C.m≤-2 | D.m≤-2或m≥2 |
a |
b |
a |
b |
a |
b |
OP |
OA |
OB |
OC |
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