x2 |
a2 |
y2 |
b2 |
y2 |
b2 |
x2 |
a2 |
A.4
| B.2 | C.2
| D.4 |
c |
a |
c |
b |
c |
a |
c |
b |
c(a+b) |
ab |
a+b |
2 |
c(a+b) |
ab |
c(a+b) | ||
|
4c |
a+b |
4c |
a+b |
16(a2+b2) |
a2+b2+2ab |
16(a2+b2) |
2(a2+b2) |
8 |
2 |
π |
4 |
3π |
4 |
A.sin(π-x) | B.cos(π-x) | C.sin(
| D.cos(
|
2x2+bx+c |
x2+1 |
7 |
5 |
1 |
6 |
1 |
6 |
13 |
5 |
A.10 | B.-5 | C.5 | D.0 |
1+x2 |
1-x2 |
1 |
2 |
1 |
3 |
A.
| B.-
| C.1 | D.0 |
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