Starting with the fundamental field equations of Maxwell, the various approximations involved in the usual engineering formulation of the multiconductor problem are examined. Subject to these approximations, the set of differential equations which is taken as the starting point of the classical transmission theory in the steady state are derived and the character of the various parameters involved in these equations is studied. By the use of the Laplacian transformation and certain theorems of matrix algebra these equations are solved for the case of general terminal conditions. Certain special cases where the system exhibits symmetry are discussed.
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