Andere Kunden interessierten sich auch für
![Lyapunov Malkin Theorem]( "Lyapunov Malkin Theorem")
Lyapunov Malkin Theorem25,99 €![Saint- Venant's Theorem]( "Saint- Venant's Theorem")
Saint- Venant's Theorem19,99 €![Tijdeman's Theorem]( "Tijdeman's Theorem")
Tijdeman's Theorem19,99 €![Mazur's Torsion Theorem]( "Mazur's Torsion Theorem")
Mazur's Torsion Theorem19,99 €![Comparison Theorem]( "Comparison Theorem")
Comparison Theorem32,99 €![Peano Existence Theorem]( "Peano Existence Theorem")
Peano Existence Theorem25,99 €![Malgrange Ehrenpreis Theorem]( "Malgrange Ehrenpreis Theorem")
Malgrange Ehrenpreis Theorem29,99 €
The envelope theorem is a theorem used in optimisation problems (max & min) in microeconomics. It may be used to prove Hotelling''s lemma, Shephard''s lemma, and Roy''s identity. It also allows for easier computation of comparative statics in generalised economic models. The theorem exists in two versions, a regular version (unconstrained optimisation) and a generalised version (constrained optimisation). The regular version can be obtained from the general version because unconstrained optimisation is just the special case of constrained optimisation with no constraints (or constraints that are always satisfied, i.e. constraints that are identities e.g. 0 = 0 or (x + 1)2 = x2 + 2x + 1.