Find the symmetric and the skew-symmetric such that the sum of the matrices is 

  1. ​P =  
    Q = 
  2. P = 
    Q = 
  3. ​P = 
    Q =  
  4. P = 
    Q = 

Answer (Detailed Solution Below)

Option 1 : ​P =  
Q = 
Free
UP TGT Arts Full Test 1
125 Qs. 500 Marks 120 Mins

Detailed Solution

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Concept: 

A matrix X can be written as a sum of the symmetric and skew-symmetric matrix which are 

P(symmetric) = (X + XT)

Q(skew-symmetric) = (X - XT)

Where XT is transpose of matrix X

 

Calculation:

 

Given matrix X = 

Transpose matrix XT = 

Symmetric matrix (P) =  (X + XT)

⇒ P =  

⇒ P =  

⇒ P = 

Skew-symmetric matrix (Q) = (X - XT)

⇒ Q =  

⇒ Q =  

⇒ Q = 

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