Quadratic approximations (K-A)

• What do quadratic approximations look like (K-A)
• Quadratic approximation formula, part 1 (K-A)
• Quadratic approximation formula, part 2 (K-A)
• Vector form of multivariable quadratic approximation (K-A)
• The Hessian matrix (K-A)
• Expressing a quadratic form with a matrix (K-A)
• The Hessian (K-A)
• Quadratic approximation example (K-A)