Linear Algebra Question

Question

richyw · Answer

attachment

anonymous · Answer

Well for the second one you simply multiply the inverse of S to both sides. And that cancels the S on the left side

mathteacher1729 · Answer

Well, there are two parts to this question. 
1) Write the inverse matrix for S and
2) Determine if the columns of S are linearly independent. 

part (2) is easy to do -- count the pivot positions in the matrix S. If there are three, then it's invertable, if not, then it's not invertable.

richyw · Answer

wow, ok. This is crazy because the question is in the first chapter of my text! Literally there were two pages about matrices before this!

mathteacher1729 · Answer

What text are you using?

richyw · Answer

introduction to linear algebra. fourth ed. (
strang)

richyw · Answer

this first section is acually online http://math.mit.edu/linearalgebra/

anonymous · Answer

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