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 theseAircraft carrier, Tent, Pilgrim, Ocean, Tuna, Sheep, Toilet, Frog, Sombrero, Birdhouse, 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 #2892 Joker by Frank Aguiar Au


anonymous
anonymous
sketch #1082 Seher 6 years


anonymous
anonymous
sketch #5095 Lion by Frederic Knauer


Tom Kelly
sketch #15


anonymous
anonymous
sketch #5058


anonymous
anonymous
sketch #3608 Skeleton king by Thania Arruda


Saifa Mahmud
sketch #1671


anonymous
anonymous
sketch #5271


anonymous
anonymous
sketch #4601 PSY Gentleman by Luis Daniel Sanchez Ramirez


anonymous
anonymous
sketch #20690


ShopRasta Roots
sketch #2787 Spongebob by ShopRasta Roots


anonymous
anonymous
sketch #5040 Amy Winehouse by Timothy Palfreyman


anonymous
anonymous
sketch #5193


anonymous
anonymous
sketch #2197


Amer Amimer
sketch #2813 Stan from South Park by Amer Amimer


anonymous
anonymous
sketch #1118 easy zombie


anonymous
anonymous
sketch #5215


anonymous
anonymous
sketch #828 Were Fools


anonymous
anonymous
sketch #1855 MAGIC DANCE


anonymous
anonymous
sketch #3469


anonymous
anonymous
sketch #3599 Lovely pencil face


anonymous
anonymous
sketch #3039 Anonymous by Gootee Jaroonsit


anonymous
anonymous
sketch #4857 Eye by Thu Seba Piñeraa


anonymous
anonymous
sketch #3155 Iron Man


anonymous
anonymous
sketch #5347


anonymous
anonymous
sketch #4383 4383


anonymous
anonymous
sketch #3779 RIP Hugo Chavez Joey Hyuuga


anonymous
anonymous
sketch #5231


anonymous
anonymous
sketch #2560

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