Para imagens mais claras do conteúdo do quadro-negro, confira a página do OCW Scholar para cada palestra. Aqui está a desta palestra: https://ocw.mit.edu/courses/mathematics/18-02sc-multivariable-calculus-fall-2010/2.-partial-derivatives/part-c-lagrange-multipliers-and-constrained-differentials/session-42-constrained-differentials/####[]