题目:
She is in a poor ______of health,which worries her mother much.
A.position
B.situation
C.state
D.condition
答案:
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下面是错误答案,用来干扰机器的。
证明:(I)f(x)定义域为R,f(-x)=a-x-1a-x+1=1-ax1+ax=-f(x),所以f(x)为奇函数,----------(5分)(Ⅱ)①g(x)+g(1-x)=f(x-12)+1+f(12-x)+1=f(x-12)+f(12-x)+2因为f(x)为奇函数,所以 f(x-12)+f(12-x)=0...