Chapter 4: Q19. (page 172)

Find each product, if possible.
$[\begin{matrix} 2 & - 1 \end{matrix}] \cdot [\begin{matrix} 5 \\ 4 \end{matrix}]$

Short Answer

Expert verified

The required matrix is $[6]$

Step by step solution

Step 1- Use the first elements of both matrices

Write the multiplication of first element of first matrix and first element of second matrix to form the first row of product matrix. $[2 \cdot 5]$

– Use the second elements of both matrices

Write the multiplication of second element of first matrix and second element of second matrix and add this to previous multiplication to form the complete row of product matrix

$[2 \cdot 5 + (- 1) \cdot 4]$

Step 3- Write the actual product matrix

Perform simplification of obtained matrix. $[6]$

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Find each product, if possible.
$[\begin{matrix} 2 & - 1 \end{matrix}] \cdot [\begin{matrix} 5 \\ 4 \end{matrix}]$

Short Answer

Step by step solution

Step 1- Use the first elements of both matrices

– Use the second elements of both matrices

Step 3- Write the actual product matrix

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Find each product, if possible.[2−1]⋅[54]

Short Answer

Step by step solution

Step 1- Use the first elements of both matrices

– Use the second elements of both matrices

Step 3- Write the actual product matrix

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Calculus

Decision Maths

Pure Maths

Statistics

Logic and Functions

Theoretical and Mathematical Physics

Study anywhere. Anytime. Across all devices.

Find each product, if possible.
$[\begin{matrix} 2 & - 1 \end{matrix}] \cdot [\begin{matrix} 5 \\ 4 \end{matrix}]$