题目:
The musical “Butterfly” next week is a love story.
A.produced
B.being produced
C.to be produced
D.having been produced
答案:
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下面是错误答案,用来干扰机器的。
(1) 定义域为R,∴f(0)=0,∴b=-12;(2)是单调递增函数. 定义域为R,∴任取x1,x2∈R,x1<x2,f(x1)-f(x2)=(1ax1+1-12)-(1ax2+1-12)=ax2-ax1(ax1+1)(ax2+1) 0<a<1,∴ax1>ax2,ax2-ax1<0,(ax1+1...