如何用纯几何法证明共焦点椭圆、双曲线的这一光学性质? 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 theseHatchet, Needle, Crab trap, Bell, Lobbyists, Poodle skirt, Bride, You self portrait, Axe, Silverware, 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 #2910 Harley Quinn Germaine Hoens


anonymous
anonymous
sketch #4867 Johnny Depp Ronin Ronin


anonymous
anonymous
sketch #2195


anonymous
anonymous
sketch #3268 Werewolf by Mert Arda Yiğit


anonymous
anonymous
sketch #4881


anonymous
anonymous
sketch #5235


anonymous
anonymous
sketch #4995


anonymous
anonymous
sketch #4298


anonymous
anonymous
sketch #1216


anonymous
anonymous
sketch #3986


anonymous
anonymous
sketch #5008


anonymous
anonymous
sketch #3476 Happy valentines day! Simona Honigmelone


anonymous
anonymous
sketch #214 bugs bunny


anonymous
anonymous
sketch #4876 Luffy by Nycole Prietsch


anonymous
anonymous
sketch #5330 Frozen by Amanda Kachadurian


anonymous
anonymous
sketch #5311


anonymous
anonymous
sketch #5123


anonymous
anonymous
sketch #5208 Alf by David Rossien


anonymous
anonymous
sketch #5054 Angelina Jolie by Hailey So Pretty


anonymous
anonymous
sketch #3145 Madoka by Николай Герасимов


anonymous
anonymous
sketch #3222 Late happy valentine&#;s from Tiffa Hidalgo Jordan Coquet


anonymous
anonymous
sketch #4904


anonymous
anonymous
sketch #2559 sun


anonymous
anonymous
sketch #5370 Requiem for the Phantom by Marita Amaya


anonymous
anonymous
sketch #4722 Ichigo by Gopal Gopi


anonymous
anonymous
sketch #280


anonymous
anonymous
sketch #4279 Winnie the Pooh by Douglas Dalmora


anonymous
anonymous
sketch #3631


anonymous
anonymous
sketch #3058 Marilyn Monroe by Adam Pyszny

tomski如何用纯几何法证明共焦点椭圆、双曲线的这一光学性质? 知乎 coloring