Find the values x, x, and x3 that maximize f(x, x2, x3) = 2x +4x+ 3x3 subject to the following constraints. Write the exact answer. Do not round. If the function has no maximum value, write None. If infinitely many values maximize the function, write Inf. { -2x +5x + 3x3 3 4x1 + 2x2 + 2x3 6 = {x x2 = = lx