Lect14

# Lect14 - Chapter 3 Vector Spaces Math1111 Linear...

This preview shows pages 1–10. Sign up to view the full content.

Chapter 3. Vector Spaces Math1111 Linear Independence Motivation Recall that both { e 1 , e 2 , e 3 , ( 1 2 3 ) T } and { e 1 , e 2 , e 3 } are spanning sets for 3 . The set { e 1 , e 2 , e 3 } is smaller in the sense that { e 1 , e 2 , e 3 } is a subset of { e 1 , e 2 , e 3 , ( 1 2 3 ) T } .

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Chapter 3. Vector Spaces Math1111 Linear Independence Motivation Recall that both { e 1 , e 2 , e 3 , ( 1 2 3 ) T } and { e 1 , e 2 , e 3 } are spanning sets for 3 . The set { e 1 , e 2 , e 3 } is smaller in the sense that { e 1 , e 2 , e 3 } is a subset of { e 1 , e 2 , e 3 , ( 1 2 3 ) T } . Question Can we find a spanning set smaller than { e 1 , e 2 , e 3 } ?
Chapter 3. Vector Spaces Math1111 Linear Independence Motivation Recall that both { e 1 , e 2 , e 3 , ( 1 2 3 ) T } and { e 1 , e 2 , e 3 } are spanning sets for 3 . The set { e 1 , e 2 , e 3 } is smaller in the sense that { e 1 , e 2 , e 3 } is a subset of { e 1 , e 2 , e 3 , ( 1 2 3 ) T } . Question Can we find a spanning set smaller than { e 1 , e 2 , e 3 } ? Ans. NO . i.e. { e 1 , e 2 , e 3 } is a minimal spanning set .

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Chapter 3. Vector Spaces Math1111 Linear Independence Motivation Recall that both { e 1 , e 2 , e 3 , ( 1 2 3 ) T } and { e 1 , e 2 , e 3 } are spanning sets for 3 . The set { e 1 , e 2 , e 3 } is smaller in the sense that { e 1 , e 2 , e 3 } is a subset of { e 1 , e 2 , e 3 , ( 1 2 3 ) T } . Question Can we find a spanning set smaller than { e 1 , e 2 , e 3 } ? Ans. NO . i.e. { e 1 , e 2 , e 3 } is a minimal spanning set . Question When is a spanning set minimal?
Chapter 3. Vector Spaces Math1111 Linear Independence Motivation (Cont’d) Revisit the example: { e 1 , e 2 , e 3 , ( 1 2 3 ) T } is a spanning set for 3 . { e 1 , e 2 , e 3 } is a small spanning set for 3 .

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Chapter 3. Vector Spaces Math1111 Linear Independence Motivation (Cont’d) Revisit the example: { e 1 , e 2 , e 3 , ( 1 2 3 ) T } is a spanning set for 3 . { e 1 , e 2 , e 3 } is a small spanning set for 3 . ( 1 2 3 ) T 3 , ( 1 2 3 ) T Span ( e 1 , e 2 , e 3 ) .
Chapter 3. Vector Spaces Math1111 Linear Independence Motivation (Cont’d) Revisit the example: { e 1 , e 2 , e 3 , ( 1 2 3 ) T } is a spanning set for 3 . { e 1 , e 2 , e 3 } is a small spanning set for 3 . ( 1 2 3 ) T 3 , ( 1 2 3 ) T Span ( e 1 , e 2 , e 3 ) . ( 1 2 3 ) T = α 1 e 1 + α 2 e 2 + α 3 e 3 for some scalars α 1 , α 2 , α 3 . α 1 e 1 + α 2 e 2 + α 3 e 3 + ( - 1 )( 1 2 3 ) T = 0

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Chapter 3. Vector Spaces Math1111 Linear Independence Motivation (Cont’d) Revisit the example: { e 1 , e 2 , e 3 , ( 1 2 3 ) T } is a spanning set for 3 . { e 1 , e 2 , e 3 } is a small spanning set for 3 . ( 1 2 3 ) T 3 , ( 1 2 3 ) T Span ( e 1 , e 2 , e 3 ) . ( 1 2 3 ) T = α 1 e 1 + α 2 e 2 + α 3 e 3 for some scalars α 1 , α 2 , α 3 . α 1 e 1 + α 2 e 2 + α 3 e 3 + ( - 1 )( 1 2 3 ) T = 0 Can we have c 1 e 1 + c 2 e 2 + c 3 e 3 = 0 ?
Chapter 3. Vector Spaces Math1111 Linear Independence Motivation (Cont’d) Revisit the example: { e 1 , e 2 , e 3 , ( 1 2 3 ) T } is a spanning set for 3 . { e 1 , e 2 , e 3 } is a small spanning set for 3 . ( 1 2 3 ) T 3 , ( 1 2 3 ) T Span ( e 1 , e 2 , e 3 ) . ( 1 2 3 ) T = α 1 e 1 + α 2 e 2 + α 3 e 3 for some scalars α 1 , α 2 , α 3 . α 1 e 1 + α 2 e 2 + α 3 e 3 + ( - 1 )( 1 2 3 ) T = 0 Can we have c 1 e 1 + c 2 e 2 + c 3 e 3 = 0 ?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern