Question

y=(3x^2-x√x+5√x-9)/√x 求导

Answer 1

y=(3x^2-x√x+5√x-9)/√x

=3x^(3/2)-x+5-9x^(-1/2)

y'=9/2x^(1/2)-1+9/2x^(-3/2)

=9/2x^(1/2)+9/2x^(-3/2) -1