fatcousin
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enter a 2×2 matrix · see how it transforms the plane
[
matrix
]
[
]
identity
rotate 90°
scale 2x
reflect x
shear
projection
rotate 45°
det =
1
tr =
2
orientation preserved
[
visualization
]
T(e₁) = [1, 0]
T(e₂) = [0, 1]
transformed unit square
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