Lagrange multipliers and constrained optimization (K-A)

• Constrained optimization introduction (K-A)
• Lagrange multipliers, using tangency to solve constrained optimization (K-A)
• Finishing the intro lagrange multiplier example (K-A)
• Lagrange multiplier example, part 1 (K-A)
• Lagrange multiplier example, part 2 (K-A)
• Meaning of the Lagrange multiplier (K-A)
• Proof for the meaning of Lagrange multipliers (K-A)