Sorry, I am new to the forum. Thanks for passing the guidlines along to me.
I have completed and feel very confident in the about questions except these two below
1) Find two linear maps A,B: R2 ---> R2 such that A°B ≠ B°A
I understand how to find the two linear maps, but I am still...
1) Which of the following are subspaces of R3
a) T = {(x1, x2, x3) | x1x2x3 = 0}
b) T = {(x1, x2, x3) | x1 - x3 = 0}
c) T = {(x1, x2, x3) | x1 = 0}
d) T = {(x1, x2, x3) | x1 = 1}
2) Let U be a k-vector space, where k is any field. Let V be a subspace of U. Assume that dimk V = dimk U...