MATH 2Z03 Study Guide - Final Guide: Conjugate Transpose, Diagonal Matrix, Symmetric Matrix
16 Jan 2017
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The zero matrix has size, but all zeroes. Triangle matrix is half zeroes and half full: Diagonal matrix only has values from the top left to bottom right: A det(a) = 0 if: any 2 rows/columns in a are the same, any column or row is zero. Regarding the matrix a d g b e h c f i c. , i. e. take out the row and column of the cofactor index. The adjoint matrix is the transpose of the cofactor matrix. The inverse can be found in 3 ways: c. A and do row echelon until you get ( A: a shortcut for size-2 matrices: a c. Cramer"s rule: converts equations to matrices, e. g. x y cx dy a b d e e c f f. When you have complex eigenvalues, it will look scary, but just treat the i like a regular number. Sometimes, when doing row-reduction, you may have to multiply a row by i.
