下列变换不是线性变换的是______________.
A: [img=244x71]18030362317f8f5.png[/img]
B: [img=232x65]180303623c85b64.png[/img]
C: [img=161x25]18030362455ac05.png[/img],A为取定的n阶方阵
D: [img=116x25]180303624e947e6.png[/img], V是一个线性空间
A: [img=244x71]18030362317f8f5.png[/img]
B: [img=232x65]180303623c85b64.png[/img]
C: [img=161x25]18030362455ac05.png[/img],A为取定的n阶方阵
D: [img=116x25]180303624e947e6.png[/img], V是一个线性空间
举一反三
- 已知f(x)具有任意阶导数,且[img=18x32]17d622a39cdd9ca.png[/img](x)=[img=75x35]17d622a3a717d8a.png[/img]则当n为大于2的正整数时,f(x)的n阶导数[img=34x34]17d622a3b2d544c.png[/img](x)=[img=129x35]17d622a3c15d078.png[/img] ( )
- 设随机变量(X,Y)的概率密度函数为[img=282x73]18032ceadce22a4.png[/img],F(x,y)是(X,Y)在(x,y)点的分布函数,则以下选项正确的是 A: [img=158x25]18032ceae9515e0.png[/img] B: [img=175x25]18032ceaf4e7654.png[/img] C: [img=116x25]18032ceafdb09be.png[/img] D: [img=149x25]18032ceb070b5b7.png[/img] E: [img=175x25]18032ceb106ed9b.png[/img] F: [img=149x25]18032ceb1968bdb.png[/img] G: [img=134x25]18032ceb22e4b1d.png[/img] H: [img=116x25]18032ceb2ba9d91.png[/img] I: [img=116x25]18032ceb3478823.png[/img]
- 设随机变量(X,Y)的概率密度函数为[img=282x73]1802d3b87f886ed.png[/img],F(x,y)是(X,Y)在(x,y)点的分布函数,则以下选项正确的是 A: [img=158x25]1802d3b887c2d6a.png[/img] B: [img=175x25]1802d3b89023808.png[/img] C: [img=116x25]1802d3b89a1a88f.png[/img] D: [img=149x25]1802d3b8a2b3c14.png[/img] E: [img=175x25]1802d3b8ab2503b.png[/img] F: [img=149x25]1802d3b8b3de5d3.png[/img] G: [img=134x25]1802d3b8bc330fe.png[/img] H: [img=116x25]1802d3b8c43d207.png[/img] I: [img=116x25]1802d3b8cd521f9.png[/img]
- 令F(x):x是有理数,G(x):x是实数。将命题“所有的有理数都是实数,但有的有实数不是有理数”符号化为() 未知类型:{'options': ['17e0a83a4157352.jpgx(F(x)∧G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)[img=14x9]17e0a73094b5dcf.jpg[/img][img=10x11]17e0a839b915354.jpg[/img]F(x))', ' [img=8x14]17e0a83a4157352.jpg[/img]x(F(x)[img=14x9]17e0a73094b5dcf.jpg[/img]G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)∧[img=10x11]17e0a839b915354.jpg[/img]F(x))', ' [img=8x14]17e0a83a4157352.jpg[/img]x(F(x)∧G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)∧[img=10x11]17e0a839b915354.jpg[/img]F(x))', ' [img=8x14]17e0a83a4157352.jpg[/img]x(F(x)[img=14x9]17e0a73094b5dcf.jpg[/img]G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)[img=14x9]17e0a73094b5dcf.jpg[/img][img=10x11]17e0a839b915354.jpg[/img]F(x))'], 'type': 102}
- X~N(1,1), 密度函数为[img=37x25]18038fe689205b5.png[/img], 分布函数为F(x), 则( ) A: [img=198x25]18038fe690a03ee.png[/img] B: [img=101x25]18038fe69af96aa.png[/img] C: [img=67x25]18038fe6a3b8e5b.png[/img][img=118x25]18038fe6ab93d6f.png[/img] D: F(x)=F(-x)