2ax-a2+1 |
x2+1 |
2x |
x2+1 |
4 |
5 |
2(x2+1)-2x.2x |
(x2+1)2 |
2-2x2 |
(x2+1)2 |
6 |
25 |
4 |
5 |
6 |
25 |
2a(x2+1)-2x(2ax-a2+1) |
(x2+1)2 |
-2(x-a)(ax+1) |
(x2+1)2 |
1 |
a |
1 |
a |
1 |
a |
1 |
a |
1 |
a |
1 |
a |
1 |
a |
1 |
a |
1 |
a |
1 |
a |
1 |
a |
1 |
a |
1-a |
x |
1 |
2 |
1 |
3 |
5 |
12 |
3 |
a |
3 |
lim |
△x→0 |
f(x0+2△x)-f(x0) |
△x |
A.2 | B.-2 | C.
| D.-
|
© 2017-2019 超级试练试题库,All Rights Reserved.