1.

Let A and B be two matrices such that A=[aij]=⎡⎢⎣x123x−114x2+1⎤⎥⎦ and B=[bij]=⎡⎢⎢⎢⎣1x21x2x23x⎤⎥⎥⎥⎦, where x>0. If C=[cij]=AB and the minimum value of Δ(x)=∑i≤i≤j≤2cij is pq, where p and q are co-prime numbers, then the value of p+q is

Answer» Let A and B be two matrices such that A=[aij]=⎡⎢⎣x123x−114x2+1⎤⎥⎦ and B=[bij]=⎡⎢
⎢
⎢
⎣
1x21x2x23x⎤⎥
⎥
⎥
⎦
, where x>0. If C=[cij]=AB and the minimum value of Δ(x)=∑i≤i≤j≤2cij is pq, where p and q are co-prime numbers, then the value of p+q is


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