2) Найдите производную: а) у = 2x -x³; 6) y= 3/x; B) y= x^6/2; г) у= x/156.

а) (y = 2x - x^3). (y' = 2 - 3x^2). б) (y = \frac{3}{x}). (y' = -\frac{3}{x^2}). в) (y = \frac{x^6}{2.4}). (y' = \frac{6x^5}{2.4} = \frac{5}{2}x^5). г) (y = \frac{x}{156}). (y' = \frac{1}{156}).