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]
A: [img=151x51]1803d360b1cdf24.png[/img]
B: [img=151x51]1803d360bbfae34.png[/img]
C: [img=151x51]1803d360c6457e5.png[/img]
D: [img=151x53]1803d360d1e65df.png[/img]
举一反三
- 设区域D由直线 y=x, y=-x 和 x=1 围成, 则 [img=214x60]1803b63c14369c7.png[/img]
- 设区域D:由直线y=0、y=x、曲线[img=228x95]17da6e9cceb3435.png[/img]=1与 x>0所围成，则二次积分[img=732x214]17da6e9ce28a89f.png[/img] （ ）.
- 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]
- 设三阶方阵[img=117x75]17da6265af67565.png[/img]有特征值[img=36x21]17da6265c0f8ef3.png[/img],则[img=26x15]17da6265d451088.png[/img] ,[img=27x17]17da5b7f743dcc3.png[/img] . A: x=1, y=1 B: x=2, y=1 C: x=3, y=0 D: x=0, y=3
- 1、交换积分次序[img=171x51]1803bbf6f0c574e.png[/img]( ) A: [img=151x51]1803bbf6fc56f14.png[/img] B: [img=151x53]1803bbf70699ad0.png[/img] C: [img=151x51]1803bbf711377b9.png[/img] D: [img=151x51]1803bbf71c5331a.png[/img]