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