设[img=206x83]1803a4b49893fb7.png[/img],其中[img=33x25]1803a4b4a1aa262.png[/img]有界,则( )
A: [img=34x25]1803a4b4a97c1b9.png[/img]在[img=44x18]1803a4b4b138e5e.png[/img]处的极限不存在.
B: [img=34x25]1803a4b4a97c1b9.png[/img]在[img=44x18]1803a4b4b138e5e.png[/img]处的极限存在,但不连续.
C: [img=34x25]1803a4b4a97c1b9.png[/img]在[img=44x18]1803a4b4b138e5e.png[/img]处连续,,但不可导.
D: [img=34x25]1803a4b4a97c1b9.png[/img]在[img=44x18]1803a4b4b138e5e.png[/img]处可导.
A: [img=34x25]1803a4b4a97c1b9.png[/img]在[img=44x18]1803a4b4b138e5e.png[/img]处的极限不存在.
B: [img=34x25]1803a4b4a97c1b9.png[/img]在[img=44x18]1803a4b4b138e5e.png[/img]处的极限存在,但不连续.
C: [img=34x25]1803a4b4a97c1b9.png[/img]在[img=44x18]1803a4b4b138e5e.png[/img]处连续,,但不可导.
D: [img=34x25]1803a4b4a97c1b9.png[/img]在[img=44x18]1803a4b4b138e5e.png[/img]处可导.
举一反三
- 求不定积分[img=121x54]17da653839aa6ae.png[/img]; ( ) A: log(x^2 + 3*x + 25/4)/4 + (5*atan(x/2 + 3/4))/4 B: log(x^2 + 3*x + 25/4)/4 C: (5*atan(x/2 + 3/4))/4 D: log(x^2 + 3*x + 25/4)/4 - (5*atan(x/2 + 3/4))/4
- 求不定积分[img=115x46]17da65382f8e1b9.png[/img]; ( ) A: x - (5*log(x + 1))/4 - (3*log(x - 3)) B: (5*log(x + 1))/4 - (3*log(x - 3)) C: x - (5*log(x + 1))/4 - (3*log(x - 3))/4 D: (5*log(x + 1))/4 - (3*log(x - 3))/4
- 设[img=77x19]1802e2aa5a4095f.jpg[/img],则E(X)=4,D(X)=4/3.
- 求不定积分[img=112x35]17da6538063a9e4.png[/img]; ( ) A: (x^4*log(x)^2)/4 + (x^4*(log(x) - 1/4))/ B: (x^4*log(x)^2)/4 - (x^4*(log(x) - 1/4))/8 C: (x^4*log(x)^2)/4 - (x^4*(log(x) - 1/4)) D: (x^4*log(x)^2)/4 + (x^4*(log(x) - 1/4))/8
- 随机变量X服从均匀分布[img=246x104]1803bbdf7304c7f.png[/img]则E(X)=( ) A: 4 B: 5 C: 0.5 D: 1