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Which one of these is the right formula for the Lagrange multiplier with more than one constraint?

Which one of these is the right formula for the Lagrange multiplier with more than one constraint? Correct Answer ∇f = μ * ∇g1 + λ * ∇g2

The lagrange multiplier can be applied to any number of constraints and the condition is ∇f = Σni=1 μi ∇gi Where μi, μ2 ……..μn are appropriate constraints(scalar multiples).

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