Let 100 310 931 P é ù ê ú = ê ú ê ú ë û and Q = [qi] be two 3 × 3 matrices such that Q – P5 = I3 . Then 21 31 32 q q q + is equal to :

Question:

Let $P=\left[\begin{array}{ccc}1 & 0 & 0 \\ 3 & 1 & 0 \\ 9 & 3 & 1\end{array}\right]$ and $\mathrm{Q}=\left[\mathrm{q}_{\mathrm{i}}\right]$ be two $3 \times 3$ matrices such that $\mathrm{Q}-\mathrm{P}^{5}=\mathrm{I}_{3}$. Then $\frac{\mathrm{q}_{21}+\mathrm{q}_{31}}{\mathrm{q}_{32}}$ is equal to:

  1. 10

  2. 130

  3. 15

  4. 9


Correct Option: 1

JEE Main Previous Year 1 Question of JEE Main from Mathematics Inverse Trigonometric Functions chapter.
JEE Main Previous Year Jan. 12, 2019 (I)

Solution:

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