Chapter 9: Q. 7 (page 627)

In Problems $7 - 14$ , find the value of each determinant.
$|\begin{matrix} 3 & 4 \\ 1 & 2 \end{matrix}|$

Short Answer

Expert verified

The value of the determinant $|\begin{matrix} 3 & 4 \\ 1 & 2 \end{matrix}|$ is, $2$ .

Step by step solution

Step 1 Given determinant is,

$|\begin{matrix} 3 & 4 \\ 1 & 2 \end{matrix}|$

Now evaluate the given determinant.

$|\begin{matrix} 3 & 4 \\ 1 & 2 \end{matrix}| = 3 (2) - 4 (1)$

Step 2 Now simplify it.

$|\begin{matrix} 3 & 4 \\ 1 & 2 \end{matrix}| = 6 - 4 = 2$

Thus the value of determinant $|\begin{matrix} 3 & 4 \\ 1 & 2 \end{matrix}|$ is, $2$ .

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In Problems $7 - 14$ , find the value of each determinant.
$|\begin{matrix} 3 & 4 \\ 1 & 2 \end{matrix}|$

Short Answer

Step by step solution

Step 1 Given determinant is,

Step 2 Now simplify it.

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In Problems 7-14, find the value of each determinant.3412

Short Answer

Step by step solution

Step 1 Given determinant is,

Step 2 Now simplify it.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Geometry

Probability and Statistics

Decision Maths

Statistics

Mechanics Maths

Logic and Functions

Study anywhere. Anytime. Across all devices.

In Problems $7 - 14$ , find the value of each determinant.
$|\begin{matrix} 3 & 4 \\ 1 & 2 \end{matrix}|$