Khan Academy Static

How to approximate a multivariable function with a quadratic function. This is analogous to a quadratic Taylor polynomial in single-variable calculus.

6718_Quadratic_approximation_formula_part_2.html

6720_The_Hessian_matrix.html

6722_Vector_form_of_multivariable_quadratic_approximation.html

6717_Quadratic_approximation_formula_part_1.html

6719_Quadratic_approximation_example.html

6721_Expressing_a_quadratic_form_with_a_matrix.html

6716_What_do_quadratic_approximations_look_like.html