Matrix Multiplication: Is A Solution Possible?

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SUMMARY

The discussion centers on determining the existence of a matrix \( A \) that satisfies the equation \( A \cdot \begin{pmatrix} 0\\ 1\\ 4 \end{pmatrix} = \begin{pmatrix} 1\\ 2\\ 3\\ 4 \end{pmatrix} \). Participants highlight the need to define a linear transformation \( T:\mathbb{R}^3\rightarrow \mathbb{R}^4 \) and provide a specific example of such a transformation. The matrix representation of \( T \) is derived, showcasing one valid solution for matrix \( A \).

PREREQUISITES
  • Understanding of linear transformations
  • Knowledge of matrix multiplication
  • Familiarity with vector spaces, specifically \( \mathbb{R}^3 \) and \( \mathbb{R}^4 \)
  • Ability to construct matrices from linear transformations
NEXT STEPS
  • Study the properties of linear transformations in vector spaces
  • Learn how to derive matrix representations for linear transformations
  • Explore the concepts of dimension and rank in linear algebra
  • Investigate applications of matrix multiplication in solving systems of equations
USEFUL FOR

Students and professionals in mathematics, particularly those focusing on linear algebra, matrix theory, and applications in higher-dimensional spaces.

Yankel
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Hello

I have a question, I need to tell if there exist A such as:

A\cdot \begin{pmatrix} 0\\ 1\\ 4 \end{pmatrix} =\begin{pmatrix} 1\\ 2\\ 3\\ 4 \end{pmatrix}

how do you approach this kind of questions ?

thanks !
 
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You already know what size $A$ must be. What would that be?
 
Yankel said:
Hello

I have a question, I need to tell if there exist A such as:

A\cdot \begin{pmatrix} 0\\ 1\\ 4 \end{pmatrix} =\begin{pmatrix} 1\\ 2\\ 3\\ 4 \end{pmatrix}

how do you approach this kind of questions ?

thanks !
Define a linear transformation $T:\mathbb{R}^3\rightarrow \mathbb{R}^4$ as $T(1,0,0)=(0,0,0,0), T(0,1,0)=(1,2,3,4), T(0,0,1)=(0,0,0,0)$. Find the matrix of $T$ with respect to the standard bases. That is one possible matrix for $A$.
 

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