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 theseBeach, Circus, Snowplow, Diner, Telescope, Cake, Sprinkles, Pot bellied pig, Cave, Overalls, 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 #1451 mi6softlab vibra


Melissa Cogo
sketch #734 ytsfsfsdhgdhgf


anonymous
anonymous
sketch #4388 Homer and the Cherry


anonymous
anonymous
sketch #314 Butterfly


anonymous
anonymous
sketch #3226 Goth Face


anonymous
anonymous
sketch #4475 Daft Punk by Reggie Garcia


anonymous
anonymous
sketch #3244 Winnie the Pooh by Ashok Kumar Chaturvedi


anonymous
anonymous
sketch #2559 sun


anonymous
anonymous
sketch #2062


anonymous
anonymous
sketch #1490 James Joyce....


anonymous
anonymous
sketch #4520


anonymous
anonymous
sketch #5230


Donara Smbatyan
sketch #1449 donara


sketchmaster
sketch #2624 Pikachu by sketchmaster


anonymous
anonymous
sketch #1068 dançando


Rachel Roe
sketch #78 Dino-Roar


anonymous
anonymous
sketch #5197 Rihanna by Ben Hall


anonymous
anonymous
sketch #4904


anonymous
anonymous
sketch #4279 Winnie the Pooh by Douglas Dalmora


anonymous
anonymous
sketch #4972


anonymous
anonymous
sketch #4190


Gaurav Patel
sketch #2691


anonymous
anonymous
sketch #3138 Papa Smurf by Courtney Spragg


Ashok Kumar Chaturvedi
sketch #2699 Girl in shades Ashok Kumar Chaturvedi


anonymous
anonymous
sketch #1562 Shaking red horse


anonymous
anonymous
sketch #5340 Amazing Dragon


anonymous
anonymous
sketch #3457

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