如图,为什么例 2 是满射,不是单射? 知乎 Template




You need a modern browser try chrome, to view this.

Background image: Hide Show

View Larger Image Image Credit: zhihu.com






Try and sketch some of theseCrutches, Tap dancer, Slicer, Basset hound, Shorts, Shield, Bank robber, Stream, Wrench, Chest, view more ideas


please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?

anonymous
anonymous
sketch #5222 Magic Art Tin Sheek


anonymous
anonymous
sketch #4091 Irie


anonymous
anonymous
sketch #20690


sketchmaster
sketch #2598


anonymous
anonymous
sketch #1045


Ainhoa White
sketch #4269 dragón


anonymous
anonymous
sketch #264


anonymous
anonymous
sketch #2939 Eye by Kimmy Kitty Perry Priemus


Donara Smbatyan
sketch #1452 donara


anonymous
anonymous
sketch #5151


anonymous
anonymous
sketch #3473 Finn by Luana Santos


anonymous
anonymous
sketch #4221 Moi.


anonymous
anonymous
sketch #4393 ant


anonymous
anonymous
sketch #5440


anonymous
anonymous
sketch #4874 Milla Jovovich by Kimmy Kitty Perry Priemus


Rachel Roe
sketch #673 Peachy mouse


anonymous
anonymous
sketch #3586


anonymous
anonymous
sketch #5054 Angelina Jolie by Hailey So Pretty


anonymous
anonymous
sketch #3148


Tom Kelly
sketch #666


Tom Kelly
sketch #4 Nirvana Smiley


anonymous
anonymous
sketch #978


anonymous
anonymous
sketch #5131 Miley Cyrus by Vannak Von


anonymous
anonymous
sketch #4921


anonymous
anonymous
sketch #3392


Alexander Volodimirovich Danilchenko
sketch #2777 Ralph & Vanellope by Alexander Volodimirovich Danilchenko


anonymous
anonymous
sketch #3413 Link by Dã Tr� ng

tomski如图,为什么例 2 是满射,不是单射? coloring