取对数即可念衡,绝芦答案并高带如图所示
取对数,得lny=1/2 [ln|x-1|+ln|x-2|-ln|x-3|-ln|x-4|]两边求碧笑导,得y'/y=1/2×【敏慧伏1/(x-1)+1/(x-2)-1/(x-3)-1/(x-4)】y'=y×1/2×【1/桥携(x-1)+1/(x-2)-1/(x-3)-1/(x-4)】y'=√{[(x-1)(x-2)]/[(x-3)(x-4)]}×1/2×【1/(x-1)+1/(x-2)-1/(x-3)-1/(x-4)】