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seen Jul 18 '13 at 22:28

Dec
11
awarded  Popular Question
Feb
6
asked Given one endpoint on an arc of a circle and the radius and arc angle, how to calculate the other endpoint of the arc?
Oct
14
accepted reducing invertible matrix in an equation of matrix
Oct
14
comment reducing invertible matrix in an equation of matrix
could you explain the steps for me? thanks
Oct
13
comment reducing invertible matrix in an equation of matrix
thanks for the help. I think i misinterpreted the problem and now I'm going with A as a 3x3 matrix
Oct
13
comment reducing invertible matrix in an equation of matrix
@EuYu i think i may have interpreted this question incorrectly, now A is really invertible
Oct
13
revised reducing invertible matrix in an equation of matrix
edited body
Oct
12
comment reducing invertible matrix in an equation of matrix
@EuYu going from that, can't I take off A transpose from both sides?
Oct
12
revised reducing invertible matrix in an equation of matrix
added 30 characters in body
Oct
12
revised reducing invertible matrix in an equation of matrix
added 2 characters in body
Oct
12
comment reducing invertible matrix in an equation of matrix
hmm you guys are right, that makes no sense. If we assume that ATA is invertible, then what does this reduce to?
Oct
12
asked what is an integral multiple of a period?
Oct
12
asked reducing invertible matrix in an equation of matrix
Apr
13
awarded  Scholar
Apr
13
accepted Why is $|1+e^{i\phi}|=|2\cos(\phi/2)|$?
Apr
13
awarded  Supporter
Apr
13
awarded  Editor
Apr
13
revised Why is $|1+e^{i\phi}|=|2\cos(\phi/2)|$?
forgot to include abs value
Apr
13
asked Why is $|1+e^{i\phi}|=|2\cos(\phi/2)|$?
Feb
6
awarded  Student