2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93518The connection between the strictly isospectral construction in supersymmetric quantum mechanics and the general zero mode solutions of the Schroedinger equation is explained by introducing slightly generalized first-order intertwining operators. We also present a multiple-parameter generalization of the strictly isospectral construction in the same perspective7 pages, LaTexQuantum Physicstext