The function [img=164x43]1803e256fccc749.png[/img] is a （ ）.
A: bounded function
B: periodic function
C: even function
D: odd function
A: bounded function
B: periodic function
C: even function
D: odd function
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
- If [img=34x25]1803e254fa72e37.png[/img] is an even function and [img=33x25]1803e25502f5f78.png[/img] is an odd function，then ( ). A: All [img=191x25]1803e2550bd75da.png[/img] are even functions; B: All [img=191x25]1803e25513d5400.png[/img] are odd functions; C: [img=124x25]1803e2551c3ff9f.png[/img]are odd functions and [img=56x25]1803e25523e8c1c.png[/img]is an even function; D: [img=124x25]1803e2552c8c3c6.png[/img] are even functions and [img=56x25]1803e25534c2a44.png[/img] is an odd function.
- The function [img=114x27]1803e256894224d.png[/img] is a periodic function.
- The function [img=118x45]1803e256879b359.png[/img] is an even function, where [img=43x19]1803e2568fe9357.png[/img] and [img=43x23]1803e25698e34e9.png[/img].
- The function [img=112x28]1803e256ccb5ef7.png[/img]is a [img=11x14]1803e256d59cc41.png[/img]-periodic function.