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QBobWatson
Interactive Linear Algebra
Eigenspaces section. "then λ is not an eigenvector of A. " should be "then λ is not an eigenvalue of A ."
It should be "linear dependence". 
There is an error in the example: The solution set is a plane： 
There is a typing error in **Example(A nonstandard coordinate system on R^2**. "Using this grid it is easy to see that the B-coordinates of v are (5 1)". The number...
In reference to version 9aac2a94d05444681b4cbe4fa43bbe2670208e28
`https://textbooks.math.gatech.edu/ila/chap-algebra.html` you will see `hnow` to express all solutions of a system of linear equations in a unique way using the parametric form of the general solution.
