Let P = bmatrix 1 & 0 & 0 3 & 1 & 0 9 & 3 & 1 bmatrix and Q = [q_ ij ] be two 3 × 3 matrices such that Q -...

Question

Let P = bmatrix 1 & 0 & 0 3 & 1 & 0 9 & 3 & 1 bmatrix and Q = [q_ ij ] be two 3 × 3 matrices such that Q - P^5 = I_3. Then q_ 21 + q_ 31 q_ 32 is equal to:

Accepted Answer

(D)

JEE Main 2019 Mathematics question

Solution