GATE (TF) Textile 2015 Question Paper Solution | GATE/2015/TF/14

Question 14 (Textile Engineering & Fibre Science)

If $A= \begin{bmatrix} 3 & 0 & 0\\ 0 & 4 & 0\\ 0 & 0 & \frac{1}{12}\end{bmatrix}$ , then determinant $A^{-1}$ is __1__.

[Show Answer]

Write Here

$A= \begin{bmatrix} 3 & 0 & 0\\ 0 & 4 & 0\\ 0 & 0 & \frac{1}{12}\end{bmatrix}$
$\left |A \right |=3(4\times\frac{1}{12})-0+0$
$\left |A \right |=1$
$\left |A^{-1} \right |=\frac{1}{A}$
$\left |A^{-1} \right |=1$ (Ans)

Previous Question

Next Question

Frequently Asked Questions | FAQs

GATE Textile Engineering and Fibre Science (TF) Question Papers | GATE Textile Question Answer | GATE Textile Solved Question Papers | GATE Textile Papers | GATE Textile Answer Key