用Matlab做的,8解导数的结果如下,找找规律,可用数学归纳法证明.-3*cos(x)^2*sin(x),6*cos(x)*sin(x)^2-3*cos(x)^3,-6*sin(x)^3+21*cos(x)^2*sin(x),-60*cos(x)*sin(x)^2+21*cos(x)^3,60*sin(x)^3-183*cos(x)^2*sin(x...