Drag the blue vector b and the red vector a. Watch how the projection b̂ and error e adjust in real-time.
Orthogonality Check
The error vector e is always perpendicular to a.
aTe = 0.00
Projection is not invertible.
Several vectors give the exact same projection b̂.
In b̂ = Pb, the matrix P is a Singular matrix.
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