4. Determine whether or not the following functions are linearly independent in the vector space P4. {p:(x) = 2x – 1,P2(x) = x² + 3x – 1, p3(x) = 1- 2x + x*} Note: You will have to solve c1P1(x) + c2P2(x)+c3P3(x) here are several ways to do this. You could plug in points to get equations in the c's. Or you an expand and equate coefficients. Or you could differentiate both sides of the equation. = 0 for the c's.