f(x1)+f(x2)+…+f(xn) |
n |
x1+x2+…+xn |
n |
sinA+sinB+sinC |
3 |
A+B+C |
3 |
π |
3 |
| ||
2 |
3
| ||
2 |
3
| ||
2 |
A.点B处 | B.点C处 | C.点D处 | D.点E处 |
|
A.g(x)=sinx | B.g(x)=x | C.g(x)=x2 | D.g(x)=|x| |
f(1) |
f(2) |
f(2) |
f(3) |
f(2006) |
f(2007) |
a |
b |
2 |
1 |
a |
1 |
b |
A.①②③④ | B.①③④ | C.③④ | D.②③④ |
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