Efficient Method for Finding Basis and Determinant of 4 Vectors in Matrix Form

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SUMMARY

The discussion focuses on efficiently determining the basis and determinant of four vectors represented in matrix form. The primary method discussed involves calculating the determinant using the expansion method, which is deemed lengthy. Participants suggest that simplifying the vectors before calculating the determinant can expedite the process, such as combining vectors to produce simpler forms. The conclusion emphasizes that recognizing simplifications can lead to quicker solutions.

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  • Understanding of matrix representation of vectors
  • Knowledge of determinant calculation methods
  • Familiarity with vector operations such as addition and scalar multiplication
  • Experience with linear algebra concepts
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  • Research efficient determinant calculation techniques, such as row reduction
  • Explore vector space concepts and basis determination
  • Learn about matrix simplification strategies to enhance computational efficiency
  • Study advanced linear algebra topics, including eigenvalues and eigenvectors
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Students and professionals in mathematics, particularly those studying linear algebra, as well as educators looking for efficient teaching methods for vector operations and determinants.

pyroknife
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I know how to do the problem, just put the 4 vectors in matrix form and find for what values of k is the detminant =0. the answer is then that k can't equal the value that was found.

Is there a easier way to do this?

My method involves finding the determinant using the expansion method, which seems like a long way. Is there a faster way?
 

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In this example, it's quicker to spot simplifications first.
Add 3rd vector to 2nd to produce (0, 2, 0, 7).
Multiply 1st by 7 and new 2nd by 2 then subtract 2nd from 1st.
etc.
 

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