设函数f(x)=x3-x2-1 , 则 f(1/x)=( ) [ 2 分 ] A.1-x+x3/x3 设函数f(x)=x3-x2-1 , 则 f(1/x)=( ) [ 2 分 ] A.1-x+x3/x3 B.1+x-x3/x3 C.1-x-x3/x3 D.1+x 分类:电气测量技术 题型:选择题 查看答案
He is always here. It’s ____ you’ve never met him. He is always here. It’s ____ you’ve never met him.(本题3.5分) A、 unique B、 strange 分类:电气测量技术 题型:选择题 查看答案