lim |
△x→∞ |
f(x0)-f(x0+△x) |
2△x |
A.-1 | B.-2 | C.-
| D.
|
lim |
k→0 |
f(x0+k)-f(x0) |
k |
lim |
k→0 |
f(x0+k)-f(x0) |
2k |
1 |
2 |
lim |
k→0 |
f(x0+k)-f(x0) |
k |
1 |
2 |
A.0 | B.3 | C.-2 | D.3-2t |
x |
x-2 |
A.y=x-2 | B.y=-3x+2 | C.y=2x-3 | D.y=-2x+1 |
A.10 | B.5 | C.-1 | D.-
|
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