Consider the matrix A and vector v given by,
A=round(sprand(5e3,1e4,1/1e4*100)*100);
v=randi(10,width(A),1);
Write a routine that will return the diagonal of the quadratic form A*diag(v)*A', and which executes on the above inputs in less than 0.03 seconds.
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Last Solution submitted on Apr 24, 2026

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William Dyuman Joshi Chuguang Pan Lorenzo

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