A.x-3y+1=0 | B.3x+y+5=0 | C.3x-y-1=0 | D.3x+y-1=0 |
lim |
n→∞ |
(1+
| ||
(1+
|
A.0 | B.1 | C.
| D.
|
1 |
3 |
lim |
n→+∞ |
A.
| B.
| C.
| D.2 |
lim |
△x→0 |
f(1+△x)-f(1) |
3△x |
A.f"(1) | B.3f"(1) | C.
| D.以上都不对 |
lim |
x→-3 |
x2-9 |
x+3 |
A.-6 | B.0 | C.6 | D.3 |
lim |
n→∞ |
1+2+3+…+n |
n2 |
A.2 | B.4 | C.
| D.0 |
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