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问题 填空题
已知函数f（x）=
32x
3+32x
，则f（
1
101
）+f（
2
101
）+…+f（
100
101
）=______．
答案

f（x）+f（1-x）=

32x
3+32x
+
32-2x
3+32-2x
=
32x
3+32x
+
32-2x•32x-1
(3+32-2x)•32x-1
=
32x
3+32x
+
3
3+32x
=1

故f（

1
101
）+f（
100
101
）=f（
2
101
）+f（
99
101
）=…=1

故f（

1
101
）+f（
2
101
）+…+f（
100
101
）=50×1=50

故答案为：50

多项选择题

依照不同的发行本位，国债可以分为（）.

A、实物国债

B、货币国债

C、记帐式国债

D、凭证式国债
查看答案
单项选择题

Speaker A: This exercise is really beyond me.
Speaker B: ().

A. When do you think you can work it out

B. Why not come to me

C. When did your teacher give you this math assignment

D. Our math teacher is too hard on us.
查看答案