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给定函数:①y=x2;②y=2x;③y=cosx;④y=-x3,其中奇函数是( ...
给定函数:①y=x2;②y=2x;③y=cosx;④y=-x3,其中奇函数是( )
A.①
B.②
C.③
D.④
考点分析:
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B.-1+i
C.1-i
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