a |
b |
a |
b |
a |
b |
a |
b |
π |
3 |
AB |
AC |
AC |
AD |
AB |
AD |
AB |
AC |
BC |
AB |
AC |
BC |
AC |
BC |
a |
b |
b |
c |
a |
c |
b |
0 |
a |
b |
a |
a |
b |
b |
a |
b |
1 |
2 |
a |
b |
a |
b |
1 |
2 |
π |
3 |
BC |
BD |
AC |
AB |
AD |
AB |
AC |
AD |
AC |
AB |
AB |
AD |
AB |
AB |
| ||||
|
|
AB |
AC |
BC |
AB |
AC |
BC |
CB |
CB |
0 |
AC |
BC |
b |
0 |
a |
b |
b |
c |
a |
b |
A.f(x)既不是奇函数也不是偶函数 | ||||
B.f(x)在[-π,0]上恰有一个零点 | ||||
C.f(x)是周期函数 | ||||
D.f(x)在(
|
|
A.若f1(x)是增函数,f2(x)是减函数,则f(x)存在最大值 |
B.若f(x)存在最大值,则f1(x)是增函数,f2(x)是减函数 |
C.若f1(x),f2(x)均为减函数,则f(x)是减函数 |
D.若f(x)是减函数,则f1(x),f2(x)均为减函数 |
an+2 |
an+1 |
an+1 |
an |
|x| |
x2+1 |
1 |
2 |
4 |
5 |
© 2017-2019 超级试练试题库,All Rights Reserved.