题目

根据句意和首字母提示完成句子。 (1) The blue bag is seven d. (2) - How m is the book.- Five yuan. (3) My hat is big and your hat is s. (4) How much are these s(鞋). (5) The T-shirt is l(长的). 答案:【1】dollars 【1】much 【1】small 【1】shoes 【1】long已知函数f(x)的定义域为[﹣2,2],若对于任意的x,y∈[﹣2,2],都有f(x+y)=f(x)+f(y),且当x>0时,有f(x)>0 (Ⅰ)证明:f(x)为奇函数;(Ⅱ)若f(1)=3求f(x)在[﹣2,2]上的值域.
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