Concept — Sostituzione. Featured in chapters 27 · 31 Linked atoms 7 linked atoms. 27 Metodi unificanti per equazioni e disequazioni A checklist for the oral exam Exponential equation with substitution Idea 1: substitution 31 Equazioni goniometriche Equation in tangent squared Equations solvable by substitution Second-degree equation in sine The parametric-formulae method