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 theseGuppy, Tramway, Hillbilly, Ice house, Glitter, Honey, Confetti, Pottery, Fries, Skydiver, 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 #2477 hhhh


anonymous
anonymous
sketch #378 Guess what flag? ɔılqndǝɹ ɥɔǝzϽ


anonymous
anonymous
sketch #5261


anonymous
anonymous
sketch #2977 Spongebob Germaine Hoens


Rachel Roe
sketch #78 Dino-Roar


anonymous
anonymous
sketch #3496


anonymous
anonymous
sketch #542 life


anonymous
anonymous
sketch #4713


Raisa Mahmud
sketch #2055 Flower


anonymous
anonymous
sketch #1045


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


anonymous
anonymous
sketch #5289


anonymous
anonymous
sketch #5050


anonymous
anonymous
sketch #5285


anonymous
anonymous
sketch #4728 Angry Toad by Geneval Mendes


anonymous
anonymous
sketch #2895 Hulk by Dmitry Cherepanin


Jaroslav Florian
sketch #135 TYGER Style


anonymous
anonymous
sketch #3539 Octo by Aristo A. Kadir


Rachel Roe
sketch #669 Cluck


anonymous
anonymous
sketch #3950


anonymous
anonymous
sketch #1119 crimson


anonymous
anonymous
sketch #3165


anonymous
anonymous
sketch #3686 Toy Story by Thania Arruda


anonymous
anonymous
sketch #286 sun


anonymous
anonymous
sketch #921 comics ufo


anonymous
anonymous
sketch #5101


anonymous
anonymous
sketch #3707 The Thinker


anonymous
anonymous
sketch #3639


Charlie Vo
sketch #2018

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