2. Determine if the following sets of functions are linearly independent on R. (a) x x , 22 (b) x, log2(x), In(a) Note: Remember, if the arbitrary functions f1(x), ..., fn(x) are linearly dependent, then WIfi(x), . .., fn(x)](xo) = 0 for all co E R. However, the converse is not true in general