I really really need help understanding "span" in linear algebra. How do you determine if a vector is the span of a matrix? How do you show that R^2 or R^3 = span of a matrix?
prob) determine if the vector b is in the span of the columns of the matrix A.
A =
[1 2]
[3 4]
b =
[5]
[6]
prob) show that R^2 =
span
([1] , [1])
([1] , [-1])
Any help would be nice![]()