Linear Algebra Summary and Solutions

Span
Span
Span
Span
 
(Different number of vectors can generate the same space.)
Span
Span
Has solution or not?
The same
question
The same
question
Span
 
Every 
b
 has
solution
 
Summary
 
No
solution
 
YES
 
Unique solution
 
Infinite solution
 
NO
Slide Note
Embed
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This content delves into the concept of spans in linear algebra, discussing vector sets, generating sets, linear combinations, and solution spaces. It explores the span of vectors, linear independence, and the existence of solutions in a system of equations. The visual aids provided help in understanding the theoretical concepts presented.

  • Linear Algebra
  • Solutions
  • Vector Spaces
  • Spans
  • Linear Independence

Uploaded on Aug 28, 2024 | 0 Views


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Presentation Transcript


  1. Hand Span Palm Span Span

  2. Span A vector set ? = ?1,?2, ,?? S??? ? is the vector set of all linear combinations of ?1,?2, ,?? ???? ? = ?1?1+ ?2?2+ + ????| ??? ??? ?1,?2, ,?? Vector set ? = ???? ? ? is a generating set for ? or ?generates V One way to describe a vector set with infinite elements

  3. 0 0 =0 Span ?1 0 Let ?0= {0 Ans: {0 0}, what is Span ?0? 0} (only one member) Span ?1 1 1 1 Let ?1= { 1}, what is Span ?1? Span ?1= { 1, If S contains a non zero vector, then Span S has infinitely many vectors 1 2, 1 2 , } 1

  4. Span 1, 2 1 1 Let ?2= { what is Span ?2? } Let ?1= { Span ?1=? 1} 2 Span ?2 Span ?1 2 2 1 1 1 1 Span ?1= Span ?2 (Different number of vectors can generate the same space.)

  5. Span 1, 2 1 ,2 Let ?3= { 1}, what is Span ?3? 2 Every vector in R2 is their linear combination 2 2 2 1 1 1 = R2 Span ?3

  6. Span 1, 1 1, 2 1 ,2 1, 2 1 ,2 Let ?4= { what is Span ?4=? Let ?3= { what is Span ?3=? } 1} 3 2 2 1 3 2 2 2 2 2 1 2 1 1 1 1 1 Span ?3= R2 Span ?4= R2

  7. Has solution or not? The same question ?11 ??1 ?12 ??2 ?1? ??? Is ? the linear combination of columns of ?? ?1 ?? ?1 + ?2 + + ?? = The same question ?11 ??1 ?12 ??2 ?1? ??? ?1 ?? Is ? in the span of the columns of ?? ???? ,

  8. Span Every b has solution 1 2 1 2 2 2 1 1 1, 2 1 ,2 Let ?3= { 1}, what is Span ?3? 2 Every vector in R2 is their linear combination 2 2 2 1 1 1 = R2 Span ?3

  9. Summary ? ?? ? ?? ?:? ? Is ? in the span of the columns of ?? Is ? a linear combination of columns of ?? YES NO The columns of ? are independent. The columns of ? are dependent. No solution Rank A = n Rank A < n Nullity A = 0 Unique solution Nullity A > 0 Infinite solution

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