求导 f(x)= 7x^12 - 2x^6 +3x-9

f(x)=x^2x 求导 f(x)=x^2+1求导 f(x)=2x+3求导 f(x)=(1+x)/(2)求导, 求导f(x)=xe^(-x^2) 求导 f(x)= 7x^12 - 2x^6 +3x-9 f(x)=x(x-1)(x-2)求导 f(x)=(x-1)(x-2).(x-3)求导 f(x)=(x-1)(x-2).(x-2008)求导 f(x)=e^x/x求导 f(x)=x*e^-x求导 f(x) = e^4 x + e^-7 x 求导 f(x)=ln(x-2x+2)求导 f(x)=2x/x^2+1求导 f(x)=(2-x)(x+2)的平方 求导 f(x)=ln(x+√1+x^2) 求导 f(x)=(2x+1)(x-1)求导 f(x)=1/2(x-1/x)-lnx求导