Do not use the ipmon -a syntax if the ipmon daemon is still running. Normally, the daemon is automatically started during system boot. Issuing the ipmon -a command also opens another copy of ipmon. In such a case, both copies read the same log information, and only one gets a particular log message.
Substitution method is a method of solving a system of equations wherein one of the equations is solved for one variable in terms of the other variables.
something so reflected, as heat or especially light. Mathematics. (in a plane) the replacement of each point on one side of a line by the point symmetrically placed on the other side of the line. (in space) the replacement of each point on one side of a plane by the symmetric point on the other side of the plane.