答 設(shè)函數(shù)f(x)的定義域D關(guān)于原點(diǎn)對(duì)稱,如果對(duì)于ᗄx∈D,都有f(-x)=f(x)成立,則稱f(x)為偶函數(shù).如果對(duì)于ᗄx∈D,都有f(-x)=-f(x)成立,則稱f(x)為奇函數(shù).偶函數(shù)的圖形關(guān)于y軸對(duì)稱;奇函數(shù)的圖形關(guān)于原點(diǎn)對(duì)稱. (本文共 132 字 ) [閱讀本文] >>
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 答 設(shè)函數(shù)f(x)的定義域D關(guān)于原點(diǎn)對(duì)稱,如果對(duì)于ᗄx∈D,都有f(-x)=f(x)成立,則稱f(x)為偶函數(shù).如果對(duì)于ᗄx∈D,都有f(-x)=-f(x)成立,則稱f(x)為奇函數(shù).偶函數(shù)的圖形關(guān)于y軸對(duì)稱;奇函數(shù)的圖形關(guān)于原點(diǎn)對(duì)稱. (本文共 132 字 ) [閱讀本文] >>