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【单选题】
(Unit3阅读理解)In Tomorrow, Summer, Who helped Mirage out when she answered Mr. Ray in his own cadence ?A.
Manny
B.
Amal
C.
Not mentioned.
D.
A waiter
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【简答题】设数列 前 项和为 , 满足 . （1）求数列 的通项公式; （2）令 求数列 的前 项和 ; （3）若不等式 对任意的 恒成立，求实数 的取值范围.
【简答题】函数 . （1）求 的解析式； （2）求证：函数 为奇函数； （3）若实数 满足: , 求 的取值范围
【单选题】She was slim and he liked her that way. So he called a lawyer. The result was a contract. According to the document, the fresh-faced bride agreed to pay a fine for each pound she gained in weight, the...
A.
is a part of a comedy film
B.
is something rare
C.
is something real and becoming common daily
D.
is ridiculous
【简答题】She was slim and he liked her that way. So he called a lawyer. The result was a contract. According to the document, the fresh-faced bride agreed to pay a fine for each pound she gained in weight, the...
【简答题】已知不等式 ． （1）若对 不等式恒成立，求实数 的取值范围； （2）若对 不等式恒成立，求实数 的取值范围； （3）若对满足 的一切m的值不等式恒成立，求实数 的取值范围．
【简答题】已知数列{a n }满足 a 1 =3， 2-2 a n+1 a n+1 -3 = a n (n∈ N * )，记 b n = a n -2 a n +1 ． （Ⅰ）求数列{b n }的通项公式． （Ⅱ）若（4 n -1）a n ≥t?2 n+1 -17对任意n∈N * 恒成立，求实数t的取值范围； （Ⅲ）记 c n = 3 a n +1 ，求证： c 1 ? c 2 ? c 3 … c n ＞ ...
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