Let A= pmatrix 1&-1&0 0&1&-1 0&0&1 pmatrix and B = 7A^ 20 -20A^7+2I, Where I is an identity matrix of order...

Question

Let A= pmatrix 1&-1&0 0&1&-1 0&0&1 pmatrix and B = 7A^ 20 -20A^7+2I, Where I is an identity matrix of order 3× 3. If B = [b_ ij ], then b_ 13 is equal to _____.

Accepted Answer

910

JEE Main 2021 Mathematics question

Solution