For which real numbers x do the vectors: (x, 1, 1, 1), (1, x, 1, 1), (1, 1, x, 1), (1, 1, 1, x)not form a basis of R4 ? For each of the values of x that you find, what is the dimensionof the subspace...

For which real numbers x do the vectors: (x, 1, 1, 1), (1, x, 1, 1), (1, 1, x, 1), (1, 1, 1, x)not form a basis of R4 ? For each of the values of x that you find, what is the dimensionof the subspace of R4 that they span?