From Gilbert Strang “Linear Algebra and its Applications”, problem
3.2.2
Verify that the length of the projection is ||p|| = ||b|| |cosθ| using
p = (aTb/aTa ) a
and possibly using cosθ = aTb/ (||a|| ||b||)
Mathematics Homework Solutions
#36269
Verify the Length of a Projection
Verify that the length of the projection is ||p|| = ||b|| |cosθ| using p = (aTb/aTa ) a and possibly using cosθ = aTb/ (||a|| ||b||)
(Please see attachment for proper equations)
The length of a projection is verified.
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