Kopie vanConcave and Convex Lenses

Autor:Thijs van Grinsven, Tom Walsh

Move the tip of the "Object" arrow to move the object. Move the point named " Focus' " to change the focal length. Move the point named " Focus' " to the right side of the lens to change to a concave lens.

Nuevos recursos

functionartculture
立体几何-公理3及推论
The 3D Space
Intersections of y=a^x and y=log(a, x)
分數化百分數：練習

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Proofs Without Words
trisection31°-10
Complementary Angles
Triangle Similarity Theorems
trush
טרפז בטריגונומטריה ובהנדסה אנליטית גם יחד

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Función Tangente
Funciones
Funciones cuadráticas
Variables Aleatorias
Vectores 3D (tres dimensiones)