I need to write this equation here: X1^2+X1X2+X2^2=8 in the form of X^TAX=8 Once ive done that i nee to be able to find the matrix Q such that the transformation X=QY diagonalises A and reduces the equation to a standard form in terms of (Y1, Y2)
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Originally Posted by sazzy3 I need to write this equation here: X1^2+X1X2+X2^2=8 in the form of X^TAX=8 You may assume A is symmetric so: Now expand the expression on the left and set the coefficient of to , of to and of also to and solve for , and CB
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