(36*x)/(5*(x^2 + 25)^(1/2)) + (18*(2*x - 40))/(5*((x - 20)^2 + 64)^(1/2)) + (105*((x - 20)^2 + 64)^
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/24 09:39:35
(36*x)/(5*(x^2+25)^(1/2))+(18*(2*x-40))/(5*((x-20)^2+64)^(1/2))+(105*((x-20)^2+64)^(36*x)/(5*(x^2+25
(36*x)/(5*(x^2 + 25)^(1/2)) + (18*(2*x - 40))/(5*((x - 20)^2 + 64)^(1/2)) + (105*((x - 20)^2 + 64)^
(36*x)/(5*(x^2 + 25)^(1/2)) + (18*(2*x - 40))/(5*((x - 20)^2 + 64)^(1/2)) + (105*((x - 20)^2 + 64)^
(36*x)/(5*(x^2 + 25)^(1/2)) + (18*(2*x - 40))/(5*((x - 20)^2 + 64)^(1/2)) + (105*((x - 20)^2 + 64)^
题目是不是没完整啊.后面应该还有个1/2吧?