1 |
2 |
π |
2 |
2π |
3 |
B+C |
2 |
1 |
2 |
b2+c2-a2 |
2bc |
1 |
4 |
1 |
4 |
B+C |
2 |
1-cos(B+C) |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
8 |
17 |
32 |
π |
2 |
2π |
3 |
1 |
2 |
1 |
8 |
17 |
32 |
17 |
32 |
1 |
4 |
B+C |
2 |
17 |
32 |
1 |
4 |
1 |
2 |
1 |
x+1 |
5+4x-x2 |
1 |
2 |
6+x-x2 |
1 |
2x |
A.[0,+∞) | B.(-∞,0] | C.[0,2) | D.(-2,0] |
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