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The determinant of a 2 x 2 matrix.
Author:
Mark Willis
GeoGebra
New Resources
Stairs (Optical Illusion)
Pelecoid
Ellipse, Hyperbola and Circle as Envelopes
Cross Product in 2D and 3D
Introduction
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TPE1.2
Puzzle Piece
Nate & Anthony 1C
T-shirt design
การแยกตัวประกอบพหุนามดีกรีสอง
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Secant Line or Secant
Fractal Geometry
Continuity
Trapezoid
Prism