设y=x√x (x>0).求dy / dx.
问题描述：
设y=x√x (x>0).求dy / dx.
答
y=x根号(x)(x>0)
=x^(1+1/2)
=x^(3/2)
dy/dx=3/2*x^(3/2-1)
=3/2*x^(1/2)