设[img=83x26]17de80c9804c135.png[/img],则不定积分[img=116x47]17de80c98b940d5.png[/img]等于( ).(A)[img=55x21]17de80c996c1a08.png[/img] (B)[img=52x24]17de80c9a1804fd.png[/img] (C)[img=46x21]17de80c9abeb650.png[/img] (D)[img=63x21]17de80c9b684f9e.png[/img]
A: A
B: B
C: C
D: D
A: A
B: B
C: C
D: D
举一反三
- 设[img=83x26]1803d36a88e49b7.png[/img],则不定积分[img=116x47]1803d36a91464f6.png[/img]等于( ). A: [img=55x21]1803d36a99ef917.png[/img] B: [img=52x24]1803d36aa24b6a9.png[/img] C: [img=46x21]1803d36aaaa286c.png[/img] D: [img=63x21]1803d36ab2a8327.png[/img]
- 设[img=83x26]1803d36b14bb091.png[/img],则不定积分[img=116x47]1803d36b1ce8b2a.png[/img]等于( ).(A)[img=55x21]1803d36b248cf11.png[/img] (B)[img=52x24]1803d36b2d205f0.png[/img] (C)[img=46x21]1803d36b34e8877.png[/img] (D)[img=63x21]1803d36b3cb24f1.png[/img] A: A B: B C: C D: D
- 已知随机变量X的分布列如下:[img=386x130]17e43ec4c459e73.png[/img],则E(X)= A: 17/30 B: m未知,无法求出 C: -30/17 D: -17/30
- 用if判断语句判断[img=95x21]18032b97de3c59a.png[/img],在MATLAB中if后的判断应写为 A: 60<x<=80 B: x<=80~x>60 C: x<=80|x>60 D: x<=80&x>60
- 求不定积分[img=132x48]17da6537fc8dad6.png[/img]; ( ) A: -(4*(cos(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) B: (4*(sin(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) C: (4*(cos(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) D: (4*(cos(x/2)/2 + 2*cos(x/2)))/(17*exp(2*x))