As [img=48x18]1803e2356a134b3.png[/img], the function [img=144x25]1803e235733dafc.png[/img] is （ ）.
A: an equivalent infinitesimal with [img=11x14]1803e2357bc16bb.png[/img].
B: an infinitesimal of same order but not equivalent with [img=11x14]1803e2357bc16bb.png[/img].
C: an infinitesimal of higher order than [img=11x14]1803e2357bc16bb.png[/img].
D: an infinitesimal of lower order than [img=11x14]1803e2357bc16bb.png[/img].
A: an equivalent infinitesimal with [img=11x14]1803e2357bc16bb.png[/img].
B: an infinitesimal of same order but not equivalent with [img=11x14]1803e2357bc16bb.png[/img].
C: an infinitesimal of higher order than [img=11x14]1803e2357bc16bb.png[/img].
D: an infinitesimal of lower order than [img=11x14]1803e2357bc16bb.png[/img].
举一反三
- As [img=71x19]1803e23556504c2.png[/img], the function [img=104x25]1803e2356097b36.png[/img] is（ ）. A: an infinity B: an infinitesimal C: an unbounded function D: a bounded function
- 设X为随机变量，且E(X)= −1,Var(X)=3，则[img=136x31]1803b3be69ca3f3.png[/img] A: 18 B: 9 C: 30 D: 14
- 函数[img=126x26]1803b73c10b67e5.png[/img]在x[img=45x14]1803b73c18de92c.png[/img]处的四阶导数为 A: 360[img=11x14]1803b73c214230d.png[/img] B: [img=38x18]1803b73c289e5ca.png[/img] C: 36[img=11x14]1803b73c214230d.png[/img] D: 250[img=11x14]1803b73c214230d.png[/img]
- 函数[img=126x26]180355aad90d0f3.png[/img]在x[img=45x14]180355aae296b73.png[/img]处的四阶导数为 A: 360[img=11x14]180355aaeba4740.png[/img] B: [img=38x18]180355aaf44e55b.png[/img] C: 36[img=11x14]180355aaeba4740.png[/img] D: 250[img=11x14]180355aaeba4740.png[/img]
- 已知随机变量 X 的数学期望 E（X）=11，方差 D（X）=9，则估计 P{2<X<20}的取值范围为（） A: [img=28x43]1802fe6139a446e.png[/img] B: [img=28x43]1802fe61417ad72.png[/img] C: [img=28x43]1802fe61492a572.png[/img] D: [img=28x43]1802fe61530f8d7.png[/img]