Given-the-matrices-A-3-5-2-4-and-I-1-0-0-1-find-matrix-B-if-BA-I-find-A-the-reflection-on-the-line-y-x-and-A-the-enlargement-with-matrix-2-0-0-2-

Question Number 39013 by Rio Mike last updated on 01/Jul/18

G i v e n t h e m a t r i c e s

A = (\begin{matrix} 3 & 5 \\ 2 & 4 \end{matrix}) a n d I = (\begin{matrix} 1 & 0 \\ 0 & 1 \end{matrix})

f i n d m a t r i x B i f

B A = I

f i n d A^{'} t h e r e f l e c t i o n o n t h e

l i n e y = x a n d A^{″} t h e e n l a r g e m e n t

w i t h m a t r i x (\begin{matrix} 2 0 \\ 0 2 \end{matrix}) .

Commented by mondodotto@gmail.com last updated on 02/Jul/18

if A \times B = I \Rightarrow identity matrix

then B = inverse of matrix A