I believe log((X1*t(1,1)*inv_pos(tau(1,1)+Y1*t(1,1)))-1)
is neither concave nor convex. if you have proof otherwise, please show it.
I believe log((X1*t(1,1)*inv_pos(tau(1,1)+Y1*t(1,1)))-1)
is neither concave nor convex. if you have proof otherwise, please show it.