2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89029The strictly nonrelativistic isospectral scheme based on the general Riccati solution and Darboux transformation function corresponding to excited states is presented on the following examples: the harmonic oscillator, the square well, and the hydrogen atom13 pages in latex epsfig, 8 figures, misprints in Eq. 11 correctedQuantum Physicstext