Y=（根号X）+根号（50-3X）求一阶和2阶导数找出函数的最大最小值

推荐回答

一阶导y'=1/2/x^(1/2)-3/2/(50-3*x)^(1/2);二阶导y''=-1/4/x^(3/2)-9/4/(50-3*x)^(3/2);最大值当x=25/6时,y=8.1650;最小值当x=50/3时,y=4.0825;