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+1 vote
1.7k views
in Linear Equations by (49.9k points)
closed by

If A is an invertible square matrix and k is a non-negative real number then (KA)-1 = ?

A. k.A-1

B. 1/k.A-1

C. -k.A-1

D. None of these

1 Answer

+1 vote
by (55.0k points)
selected by
 
Best answer

y the property of inverse 

(AB)-1 = B-1A -1 

(KA)-1= A-1K-1

= 1/k A-1

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