1803229d803dc2d.png是抛物面[img=97x26]1803229d8863279.png[/img]位于[img=42x21]1803229d907029c.png[/img]部分， 则第一类曲面积分[img=68x48]1803229d989cf07.png[/img]等于
A: [img=87x48]1803229da0a2dfd.png[/img]
B: [img=87x48]1803229da8ff210.png[/img]
C: [img=56x48]1803229db1547cd.png[/img]
D: [img=87x48]1803229db95c7a8.png[/img]
E: [img=87x48]1803229dc19a2b6.png[/img]
F: [img=47x48]1803229dc9a521f.png[/img]
A: [img=87x48]1803229da0a2dfd.png[/img]
B: [img=87x48]1803229da8ff210.png[/img]
C: [img=56x48]1803229db1547cd.png[/img]
D: [img=87x48]1803229db95c7a8.png[/img]
E: [img=87x48]1803229dc19a2b6.png[/img]
F: [img=47x48]1803229dc9a521f.png[/img]
举一反三
- 1803c1df74d57b6.png是抛物面[img=97x26]1803c1df7d45549.png[/img]位于[img=42x21]1803c1df84d83e6.png[/img]部分， 则第一类曲面积分[img=68x48]1803c1df8cf35ad.png[/img]等于 A: [img=87x48]1803c1df9569bf7.png[/img] B: [img=87x48]1803c1df9e05731.png[/img] C: [img=56x48]1803c1dfa653296.png[/img] D: [img=87x48]1803c1dfaf150b3.png[/img] E: [img=87x48]1803c1dfb6dc694.png[/img] F: [img=47x48]1803c1dfbe98555.png[/img]
- 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
- 1.设随机变量X的密度为[img=186x61]18034ea953ec9dd.png[/img]则常数A=________，概率[img=146x25]18034ea95d30d08.png[/img]__________. A: A=2，P(X>1|X<2)=[img=39x24]18034ea9659b618.png[/img] B: A=-2，P(X>1|X<2)=[img=39x24]18034ea9659b618.png[/img] C: A=2，P(X>1|X<2)=[img=47x44]18034ea9768a8c2.png[/img] D: A=-2，P(X>1|X<2)=[img=47x44]18034ea9768a8c2.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}
- 设函数[img=43x26]17e0b4319e43bd3.png[/img]为连续函数,满足[img=168x42]17e0b431ab52ca3.png[/img],则[img=59x26]17e0b431bd22be1.png[/img](). A: -8 B: 8 C: 48 D: -48