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Results tagged with orthogonal-matrices
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user 4435
An orthogonal matrix is an invertible real matrix whose inverse is equal to its transpose.
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Solution for $Xa + X^Tb = c$ where $X^TX = I$?
As a beginning of a search for solutions, we can take norms of each side. We then get
$$\|a\|^2 + \|b\|^2 + 2 b\cdot (X^2 a)=\|c\|^2,$$
which is enough to fix the angle between $b$ and $X^2 a$.
Simil …
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