Video Lectures
Lecture 6: Column space and nullspace
This lecture discusses column space and nullspace. The column space of a matrix A tells us when the equation Ax = b will have a solution x. The nullspace of A tells us which values of x solve the equation Ax = 0.
These video lectures of Professor Gilbert Strang teaching 18.06 were recorded in Fall 1999 and do not correspond precisely to the current edition of the textbook. However, this book is still the best reference for more information on the topics covered in each lecture.
Strang, Gilbert. Introduction to Linear Algebra. 5th ed. WellesleyCambridge Press, 2016. ISBN: 9780980232776.
Instructor/speaker: Prof. Gilbert Strang
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As Taught In:  Spring 2010 
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Undergraduate

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