1MATSHELL and matrix free multiple appear to produce the same results 2MATSHELL transpose and matrix free multiple appear to produce the same results 3MATSHELL and matrix free multiple appear to produce the same results 4MATSHELL transpose and matrix free multiple appear to produce the same results 5MATSHELL and matrix free multiple appear to produce the same results 6MATSHELL transpose and matrix free multiple appear to produce the same results 7MATSHELL and matrix free multiple appear to produce the same results 8MATSHELL transpose and matrix free multiple appear to produce the same results 9 10First column of the Hessian 112.17403 120.233113 13MATSHELL and matrix free multiple appear to produce the same results 14MATSHELL transpose and matrix free multiple appear to produce the same results 15MATSHELL and matrix free multiple appear to produce the same results 16MATSHELL transpose and matrix free multiple appear to produce the same results 17 18Second column of the Hessian 190.167434 200.298945 21