微分法の基本性質

問題次の関数を微分せよ。$${\small (1)}~y=x^5-2x^4+5x^3$$$${\small (2)}~y=(x^2+1)(3x-2)$$$${\small (3)}~y=\frac{x^2}{x-1}$$$${\small (4)}~y=(2x-3)^3$$$${\small (5)}~y=\frac{1}{(2x-3)^2}$$