设 [img=35x23]18032f261c816df.png[/img] 均为二阶方阵, [img=49x24]18032f26254a73c.png[/img] 分别是 [img=35x23]18032f261c816df.png[/img] 的伴随矩阵, 若 [img=106x25]18032f2635853a6.png[/img] 则分块矩阵 [img=70x51]18032f263e425c9.png[/img] 的伴随矩阵为
A: [img=107x51]18032f26497736c.png[/img]
B: [img=107x51]18032f26545b568.png[/img]
C: [img=107x51]18032f265f21a25.png[/img]
D: [img=107x51]18032f2668f821d.png[/img]
A: [img=107x51]18032f26497736c.png[/img]
B: [img=107x51]18032f26545b568.png[/img]
C: [img=107x51]18032f265f21a25.png[/img]
D: [img=107x51]18032f2668f821d.png[/img]
举一反三
- 若f(x)+f(-x)=0, 则[img=95x39]17da608af452d96.jpg[/img]. 若f(x)=f(-x), 则 [img=170x38]17da60541207426.jpg[/img]
- 设f(x)=[img=15x18]17da42685cb8d76.jpg[/img],则f【f'(x)】=
- 设[img=28x19]17da41b38e91a03.jpg[/img]为可导函数,则[img=63x37]17da426f632f014.jpg[/img]的导数是( ) A: f(x) B: f(x)+C C: f '(x) D: f '(x)+C
- 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}
- 设X的密度函数为f(x)，分布函数为F(x)，且f(x)是偶函数，则有 A: [img=235x53]1803b3ba8e4e24a.png[/img] B: [img=248x66]1803b3ba9822ce1.png[/img] C: F(−x)= F(x) D: F(−x)=2F(x)−1