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 theseRestaurant, Feather duster, Sunset, Diver, Ambulance, Pills, Fly swatter, Skateboard, Yarn, Executioner, 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 #5277 League of Legends champions by Sylvie Rieux


anonymous
anonymous
sketch #3250 Lonely cat Lars Tunebo


anonymous
anonymous
sketch #1853 scribble


anonymous
anonymous
sketch #3381 DBZ by Adidtzu Ady


anonymous
anonymous
sketch #3538


anonymous
anonymous
sketch #3064


anonymous
anonymous
sketch #2560


Rachel Roe
sketch #33 Flutter-bys


Tom Kelly
sketch #521 A hungry caterpillar


anonymous
anonymous
sketch #5290 Kyuubi Jorge Valero


anonymous
anonymous
sketch #3398 Sharingan by حيرتني بصمتها


anonymous
anonymous
sketch #1257


anonymous
anonymous
sketch #5263


sketchmaster
sketch #2620 goblin man


sketchmaster
sketch #2616 Green Day by sketchmaster


sketchmaster
sketch #2452 Manga by sketchmaster


anonymous
anonymous
sketch #5049


anonymous
anonymous
sketch #1082 Seher 6 years


anonymous
anonymous
sketch #2309


anonymous
anonymous
sketch #5078 Naruto by Shimun Yeyo Ahmed


anonymous
anonymous
sketch #4087 Stewie by Leon Soria Ricardo


sketchmaster
sketch #2460 Zayn Malik of One Direction by sketchmaster


anonymous
anonymous
sketch #5249 Adele - Skyfall by Mert Arda Yiğit


anonymous
anonymous
sketch #4471 Brother Bear by Samuel Roberto


Ines Galeana
sketch #2844 Geist Ines Galeana


anonymous
anonymous
sketch #5013 Pursuing Dreams by Mário JBudo


anonymous
anonymous
sketch #3321 Baby Mirella Flowers


Saifa Mahmud
sketch #1670


sketchmaster
sketch #2613

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