f(x)=(3x^2)/(3x-2)求导,得f'(x)=(6x(3x-2)-3x^2*3)/(3x-2)^2=(18x^2-12x-9x^2)/(3x-2)^2=3(3x^2-4x)/(3x-2)^2当f'(x)≥0时,函数为单调增函数,此时,3x^2-4x≥0,解得x≥4/3或x≤0已知x>2/3,∴解为：x≥4/3时,函数单调...