4
| ||
ex+1 |
A.[0,
| B.[
| C.(
| D.[
|
4
| ||
e2x+2ex+1 |
4
| ||
ex +
|
4
| ||
2+2 |
3 |
4 | ||
ex+
|
4 |
2+2 |
3 |
2π |
3 |
lim |
△x→0 |
f(x+a△x)-f(x-b△x) |
△x |
A.f′(x) | B.(a-b)f′(x) | C.(a+b)f′(x) | D.
|
x+1 |
x2 |
A.3x+y-1=0 | B.3x+y-5=0 | C.x-y+1=0 | D.x-y-1=0 |
|
A.y=-2x-3 | B.y=-2x+3 | C.y=2x-3 | D.y=2x+3 |
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