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 theseScale, Trombone, Palm hand, Army, Secret code, Breadbox, Cauldron, Refugee, Sheep, Street car, 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 #3755 Panda by Roberto Castro Colimil


Zay Lin
sketch #2087 zay lin


anonymous
anonymous
sketch #5164


anonymous
anonymous
sketch #3637


anonymous
anonymous
sketch #3613


anonymous
anonymous
sketch #3727 Stitch by Louis Tradieu


anonymous
anonymous
sketch #5171


anonymous
anonymous
sketch #3539 Octo by Aristo A. Kadir


Marlyn Ortiz
sketch #2029 GOD 'S PROMISE ...


anonymous
anonymous
sketch #2959 manga girl blue hair


anonymous
anonymous
sketch #5250


anonymous
anonymous
sketch #3986


anonymous
anonymous
sketch #1153 sahib


anonymous
anonymous
sketch #5327


anonymous
anonymous
sketch #5130 Batman by Kamal Ahmed Tantawy


anonymous
anonymous
sketch #3264 Lisa by Shaban Khan


anonymous
anonymous
sketch #2453 Koi Fish


anonymous
anonymous
sketch #1257


anonymous
anonymous
sketch #5064


anonymous
anonymous
sketch #5306 Katarina by Mirnes Sinanovic


anonymous
anonymous
sketch #4091 Irie


anonymous
anonymous
sketch #3290 Calvin and Hobbes by অনন্ত জলিল


anonymous
anonymous
sketch #5178 Mewtwo and Transformation by Riley Hart


anonymous
anonymous
sketch #2919 Winnie the Pooh by Greet Kros-Lolkus


anonymous
anonymous
sketch #5257


anonymous
anonymous
sketch #21085 Tobirama by Enrique L. Manly


anonymous
anonymous
sketch #5168


anonymous
anonymous
sketch #4916


anonymous
anonymous
sketch #4682 Elvis Presley by Nassim Nouri

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