題目列表(包括答案和解析)
關(guān)于函數(shù),有下列命題:
(1)由f(x1)=f(x2)=0,可得,x1-x2是的整數(shù)倍;
(2)y=f(x)的表達(dá)式可改寫(xiě)為y=4cos(2x-);
(3)y=f(x)的圖象關(guān)于點(diǎn)(-,0)對(duì)稱(chēng);
(4)y=f(x)的圖象關(guān)于直線x=-對(duì)稱(chēng);
其中正確命題的序號(hào)是
.關(guān)于函數(shù)f(x)=4sin(2x+) (x∈R),有下列命題:
(1)y=f(x )的表達(dá)式可改寫(xiě)為y=4cos (2x — );(2)y=f(x )是以2π為最小正周期的周期函數(shù);(3)y=f(x)的圖象關(guān)于點(diǎn)(— ,0)對(duì)稱(chēng);(4)y=f(x)的圖象關(guān)于直線
x= — 對(duì)稱(chēng);其中正確的命題序號(hào)是________________________.
有以下四個(gè)命題:
(1)y = f ( x )和y = f 1 ( x )的圖象關(guān)于直線y = x對(duì)稱(chēng)
(2)y = f ( x )和y = f 1 ( x )的圖象關(guān)于直線y = x對(duì)稱(chēng)
(3)y = f ( x )和y = f 1 ( x )的圖象關(guān)于直線y = x對(duì)稱(chēng)
(4)y = f ( x )和y = f 1 ( x )的圖象關(guān)于直線y = x對(duì)稱(chēng)
其中,正確命題的個(gè)數(shù)是( )
(A)1 (B)2 (C)3 (D)4
有以下四個(gè)命題:
(1)y = f ( x )和y = f 1 ( x )的圖象關(guān)于直線y = x對(duì)稱(chēng)
(2)y = f ( x )和y = f 1 ( x )的圖象關(guān)于直線y = x對(duì)稱(chēng)
(3)y = f ( x )和y = f 1 ( x )的圖象關(guān)于直線y = x對(duì)稱(chēng)
(4)y = f ( x )和y = f 1 ( x )的圖象關(guān)于直線y = x對(duì)稱(chēng)
其中,正確命題的個(gè)數(shù)是( )
(A)1 (B)2 (C)3 (D)4
關(guān)于函數(shù),有下列命題:
(1)由f(x1)=f(x2)=0,可得,x1-x2是的整數(shù)倍;
(2)y=f(x)的表達(dá)式可改寫(xiě)為y=4cos(2x-);
(3)y=f(x)的圖象關(guān)于點(diǎn)(-,0)對(duì)稱(chēng);
(4)y=f(x)的圖象關(guān)于直線x=-對(duì)稱(chēng);
其中正確命題的序號(hào)是
百度致信 - 練習(xí)冊(cè)列表 - 試題列表
湖北省互聯(lián)網(wǎng)違法和不良信息舉報(bào)平臺(tái) | 網(wǎng)上有害信息舉報(bào)專(zhuān)區(qū) | 電信詐騙舉報(bào)專(zhuān)區(qū) | 涉歷史虛無(wú)主義有害信息舉報(bào)專(zhuān)區(qū) | 涉企侵權(quán)舉報(bào)專(zhuān)區(qū)
違法和不良信息舉報(bào)電話:027-86699610 舉報(bào)郵箱:58377363@163.com