3. Let [img=161x53]1802dde8d59661c.png[/img] and [img=180x61]1802dde8df7d956.png[/img].Determine whether [img=62x33]1802dde8e7e5fb9.png[/img] and [img=61x33]1802dde8f088425.png[/img] exist or not.
A: (A) [img=62x33]1802dde8f81f6da.png[/img] and [img=61x33]1802dde8ff2f966.png[/img] both exist.
B: (B) [img=62x33]1802dde8f81f6da.png[/img] exists but [img=61x33]1802dde8ff2f966.png[/img] does not exist.
C: (C) [img=62x33]1802dde8f81f6da.png[/img] does not exist but [img=61x33]1802dde8ff2f966.png[/img] exists.
D: (D) [img=62x33]1802dde8f81f6da.png[/img] and [img=61x33]1802dde8ff2f966.png[/img] do not exist.
A: (A) [img=62x33]1802dde8f81f6da.png[/img] and [img=61x33]1802dde8ff2f966.png[/img] both exist.
B: (B) [img=62x33]1802dde8f81f6da.png[/img] exists but [img=61x33]1802dde8ff2f966.png[/img] does not exist.
C: (C) [img=62x33]1802dde8f81f6da.png[/img] does not exist but [img=61x33]1802dde8ff2f966.png[/img] exists.
D: (D) [img=62x33]1802dde8f81f6da.png[/img] and [img=61x33]1802dde8ff2f966.png[/img] do not exist.
举一反三
- f(x)在[0,1]上有连续的二阶导数，f(0)=f(1)=0,任意x属于[0,...715af2ac3f81f8.png"]
- 已知y=f(x)是奇函数,当x≥0时,[img=62x34]17e0bf81aac3b63.png[/img],则f(-8)的值是( ) A: -8 B: -4 C: 4 D: 8
- 在下列命题中:如果f(x)=[img=28x44]17e0bf9914bb2f1.png[/img],那么[img=27x29]17e0bf97582597b.png[/img]f(x)=0;如果f(x)=[img=28x44]17e0bf992111a1c.png[/img],那么[img=27x29]17e0bf97582597b.png[/img]f(x)=0;如果f(x)=[img=55x44]17e0bf992d8de0a.png[/img],那么[img=29x29]17e0bf9939482bb.png[/img]f(x)不存在;如果f(x)=[img=87x53]17e0bf99450fa82.png[/img],那么[img=27x29]17e0bf97582597b.png[/img]f(x)=0。其中错误命题的个数是( A: 0 B: 1 C: 2 D: 3
- 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}
- 若f(x)+f(-x)=0, 则[img=95x39]17da608af452d96.jpg[/img]. 若f(x)=f(-x), 则 [img=170x38]17da60541207426.jpg[/img]