Khan Academy Static

We've talked a lot about inverse transformations abstractly in the last tutorial. Now, we're ready to actually compute inverses. We start from "documenting" the row operations to get a matrix into reduced row echelon form and use this to come up with the formula for the inverse of a 2x2 matrix. After this we define a determinant for 2x2, 3x3 and nxn matrices.

6950_3_x_3_determinant.html

6947_Deriving_a_method_for_determining_inverses.html

6949_Formula_for_2x2_inverse.html

6951_n_x_n_determinant.html

6952_Determinants_along_other_rows_cols.html

6948_Example_of_finding_matrix_inverse.html

6953_Rule_of_Sarrus_of_determinants.html