请问如何用旦德林双球证明抛物线是圆锥曲线? 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 theseClothes pin, Spinach, Snow, Clarinet, Bunk beds, Sprinkles, Astronaut, Pruners, Hoe, Kilt, 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 #5153 Random Access Memories by Khin Nyunt


anonymous
anonymous
sketch #2573 homer simpson


anonymous
anonymous
sketch #5183


anonymous
anonymous
sketch #5179 Audrey Hepburn by 陳一夫


anonymous
anonymous
sketch #1923 12


Jaroslav Florian
sketch #90 JF Style!


anonymous
anonymous
sketch #3667


anonymous
anonymous
sketch #5062


anonymous
anonymous
sketch #5151


anonymous
anonymous
sketch #5204


anonymous
anonymous
sketch #5058


anonymous
anonymous
sketch #1082 Seher 6 years


anonymous
anonymous
sketch #5074


anonymous
anonymous
sketch #5141


anonymous
anonymous
sketch #20690


Jocelyn Alejandra Rantul
sketch #2678 Portrait by Jocelyn Alejandra Rantul


anonymous
anonymous
sketch #5192


sketchmaster
sketch #2476 Asuna from SAO by sketchmaster


anonymous
anonymous
sketch #3620 Dude by Arasheel Eomseii


Chris Shrimp Lonsdale
sketch #342 Forest scene


anonymous
anonymous
sketch #5217


anonymous
anonymous
sketch #3999 Deadmau by Speeð Üp Säm


anonymous
anonymous
sketch #3567 Worried Girl by Juvenilia Alexandrino


anonymous
anonymous
sketch #3197 Dragon by Yuryi Zambrano


anonymous
anonymous
sketch #2178


anonymous
anonymous
sketch #5135 &#;Hypno Colorfull&#; by Lars Tunebo


anonymous
anonymous
sketch #5170


anonymous
anonymous
sketch #929 tree stump


anonymous
anonymous
sketch #2536

tomski请问如何用旦德林双球证明抛物线是圆锥曲线? 知乎 coloring