【简答题】对于函数f(x),若存在x 0 ∈R,使得f(x 0 )=x 0 ,则称x 0 为函数f(x)的不动点,若函数 f(x)= x 2 +a bx-c (b,c∈ N * ) 有且仅有两个不动点0和2,且 f(-2)<- 1 2 . (1)试求函数f(x)的表达式; (2)已知各项不为0的数列{a n }满足 4 S n ?f( 1 a n )=1 ,其中S n 表示数列{a n }的前n项和,求数列...
【简答题】Script for the recording in page 55: Stephen Hawking is perhaps the most well-known scientist since Einstein. Like Einstein, his work (1) _______ the big questions, questions such as How did the unive...