∵f(x)是R上可導(dǎo)偶函數(shù),
∴f(x)的圖象關(guān)于y軸對(duì)稱,
∴f(x)在x=0處取得極值,即f′(0)=0,
又∵f(x)的周期為5,
∴f′(5)=0,即曲線y=f(x)在x=5處的切線的斜率0,
故選項(xiàng)為B
設(shè)函數(shù)f(x)是R上以5為周期的可導(dǎo)偶函數(shù),則曲線y=f(x)在x=5處的切線的斜率為( ) A.?15 B.0 C.15 D.5
設(shè)函數(shù)f(x)是R上以5為周期的可導(dǎo)偶函數(shù),則曲線y=f(x)在x=5處的切線的斜率為( ?。?br/>A. ?
B. 0
C.
D. 5
1 |
5 |
B. 0
C.
1 |
5 |
D. 5
數(shù)學(xué)人氣:976 ℃時(shí)間:2019-08-19 05:02:48
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