设D是由[img=100x22]18039571413c177.png[/img] 及x轴围成的区域，[img=49x25]180395714939b75.png[/img] 在D上连续，则 [img=153x48]18039571538d5a1.png[/img] （ ）
A: [img=152x51]180395715e253f8.png[/img]
B: [img=151x51]1803957167b21de.png[/img]
C: [img=151x51]180395717270193.png[/img]
D: [img=151x53]180395717cc1b75.png[/img]
A: [img=152x51]180395715e253f8.png[/img]
B: [img=151x51]1803957167b21de.png[/img]
C: [img=151x51]180395717270193.png[/img]
D: [img=151x53]180395717cc1b75.png[/img]
举一反三
- 设积分区域D是由直线y = x,y = 0,x =1围成，则[img=173x60]1803d360a797630.png[/img] A: [img=151x51]1803d360b1cdf24.png[/img] B: [img=151x51]1803d360bbfae34.png[/img] C: [img=151x51]1803d360c6457e5.png[/img] D: [img=151x53]1803d360d1e65df.png[/img]
- 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]
- 由[img=35x25]1803d355c182eb9.png[/img]上连续曲线y = f(x)及直线x =a,x= b(a <b)与x轴所围图形面积S=( ) A: [img=83x52]1803d355cabd312.png[/img] B: [img=95x53]1803d355d361a34.png[/img] C: [img=91x52]1803d355dc59dde.png[/img] D: [img=149x45]1803d355e4a0041.png[/img]
- 设F(x)是f(x)的一个原函数，C为常数，则（ ）也是f(x)的一个原函数 A: [img=63x25]1803db37c42f01b.png[/img] B: [img=49x25]1803db37cd03f1f.png[/img] C: [img=49x25]1803db37d5fbb42.png[/img] D: [img=63x25]1803db37dec46a6.png[/img]
- 设区域D由直线 y=x, y=-x 和 x=1 围成, 则 [img=214x60]1803b63c14369c7.png[/img]