Asked by Anonymous
                For the orthogonal matrix
A = 1/sqrt(2) -1/sqrt(2)
-1/(sqrt(2)) -1/sqrt(2)
verify that (Ax,Ay)=(x,y) for any vectors x and y in R2.
Can someone please explain this
            
        A = 1/sqrt(2) -1/sqrt(2)
-1/(sqrt(2)) -1/sqrt(2)
verify that (Ax,Ay)=(x,y) for any vectors x and y in R2.
Can someone please explain this
Answers
                    Answered by
            Anonymous
            
    ^ btw that matrix has 4 values in it. 
    
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