Find a matrix B such that  AB = I,  where A =    2 1   −2 2  and  I =  1 0     0 1. Hint: Let  B =  a b     c d. B =

Elementary Linear Algebra (MindTap Course List)
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Chapter2: Matrices
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Question

Find a matrix B such that 

AB = I,

 where

A = 
 
2 1
 
−2 2
  and  I = 
1
0  
 
0 1
.

Hint: Let 

B = 
a
b  
 
c d
.
B =
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