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都卜勒效應(觀察者固定)
Author:
安信
GeoGebra
New Resources
Poorly Drawn Parallelograms 2
Variation Theory Parallelogram Proofs
Poorly Drawn Parallelograms 3
Dissections by Guillermo Bautista
Quiz: Finding Average Rate of Change
Discover Resources
Solid of Revolution
Andralas Wallace Perpendicular Lines Through a Point
Start, parallel to line through point
Geometry
Congruent Triangles 3
Discover Topics
Cube
Curve Sketching
Pyramid
Numbers
Limits