How to find the orthogonal basis?

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The discussion focuses on the process of finding an orthogonal basis in linear algebra, specifically emphasizing the importance of inner products. Participants clarify that there is not a unique orthogonal basis that extends a given vector, denoted as u1. The key takeaway is the necessity of understanding inner products to approach the problem effectively.

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  • Linear algebra concepts, particularly orthogonal vectors
  • Understanding of inner product spaces
  • Familiarity with basis extension in vector spaces
  • Knowledge of Gram-Schmidt process for orthogonalization
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Students and professionals in mathematics, particularly those studying linear algebra, as well as educators seeking to deepen their understanding of orthogonal bases and inner product spaces.

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Can somebody help me how to approach this problem.I am having trouble finding the orthogonal basis.
 

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You don't need to explicitely find a orthogonal basis (note that I said "a" and not "the": there is not a unique basis that extends u1). You just need to find s.

Think of inner products.
 
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question) Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?

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