2a |
x |
1 |
2 |
f(x2)-f(x1) |
x2-x1 |
2a |
x2 |
2x3-2a |
x2 |
3 | a |
3 | a |
3 | a |
3 | a |
3 | a |
3 | a |
1 |
2 |
1 |
x |
1 |
x2 |
f(x2)-f(x1) |
x2-x1 |
(x22+
| ||||
x2-x1 |
(x2-x1)[(x2+x1)-
| ||
x2-x1 |
1 |
x1x2 |
1 |
x02 |
1 |
x1x2 |
1 |
x2 |
1 |
x1x2 |
1 |
x2 |
1 |
x1x2 |
1 |
x12 |
1 |
x1x2 |
x2-x1 |
x12x2 |
1 |
x12x2 |
1 |
x22 |
1 |
x1x2 |
x1-x2 |
x22x1 |
1 |
x1x22 |
A.5 | B.4 | C.3 | D.2 |
A.(1,2) | B.(2,3) | C.(3,4) | D.(5,6) |
A. | B. | C. | D. |
2 |
x |
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