Best Solution & Pseudoinverse

Pseudoinverse by Orthogonal Projection
Pseudoinverse and SVD
Pseudoinverse SVD Derivation from Pseudoinverse by Orthogonal Projection
Least Squares Line Approximation
Least Squares Parabola Approximation
Least Squares Plane Approximation
Also, you can download our other related app, "Least Squares Curve Fit" from Apple AppStore here:
Least Squares Curve Fit
Least Squares
Curve Fit
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Download "Matrix Solver Step by Step" from Apple AppStore here:

Matrix Solver
Matrix Solver
Step by Step

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Keywords: math, learning tools, education, linear algebra, matrix, matrices, proofs, tutorial, best solution, svd, singular value decomposition, pseudoinverse, orthogonal projection, least squares, line approximation, parabola approximation, plane approximation