Derivate parziali, differenziabilità, piano tangente e massimi/minimi (liberi e vincolati con i moltiplicatori di Lagrange).
Condition (4) requires simply connected domains. The classic counterexample is ( \mathbfF(x,y) = \left( \frac-yx^2+y^2, \fracxx^2+y^2 \right) ) on ( \mathbbR^2 \setminus (0,0) ). Here ( \textcurl , \mathbfF = 0 ) but the integral around the unit circle is ( 2\pi ), not zero. analisi matematica 2 giusti
The book has received positive reviews for its clarity, completeness, and rigor. Students and researchers appreciate Giusti's approach, which balances theoretical foundations with practical applications. y) = \left( \frac-yx^2+y^2