偶函數(shù)f(-x)=f(x)
所以令x=-x
x
已知函數(shù)y=f(x)是偶函數(shù),且當(dāng)x≥0時,f(x)=2x-1,則當(dāng)x
已知函數(shù)y=f(x)是偶函數(shù),且當(dāng)x≥0時,f(x)=2x-1,則當(dāng)x
數(shù)學(xué)人氣:317 ℃時間:2020-03-23 05:23:43
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