- #1

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## Main Question or Discussion Point

Why when doing a Lagrange Multipler with two constraints, why do you add the gradients of the two constriant funcions and set it parallel to the function to be maximized.

http://www.libraryofmath.com/pages/lagrange-multipliers-with-two-parameters/Images/lagrange-multipliers-with-two-parameters_gr_20.gif

If g and h are the two constraint functions, why would you add their gradients?

http://www.libraryofmath.com/pages/lagrange-multipliers-with-two-parameters/Images/lagrange-multipliers-with-two-parameters_gr_20.gif

If g and h are the two constraint functions, why would you add their gradients?