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Arnold's Trivium
1991 Arnold's Trivium
85
Problem 85
Problem 85
Source:
July 1, 2010
linear algebra
matrix
Problem Statement
Find the lengths of the principal axes of the ellipsoid
∑
i
≤
j
x
i
x
j
=
1
\sum_{i\le j}x_i x_j=1
i
≤
j
∑
x
i
x
j
=
1
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