f(x)=(x-1)(x-2)(x-3).(x-10) 求f'(9)=?
F(X)满足F(x)+2f(x分之1)=3X,求f(x)
已知f(x)满足2f(x)+f(1/x)=3x,求f(x)
已知f(x)满足2f(x)+f(1/x)=3x,求f(x)?
已知f(x)满足2f(x)+f(-x)=-3x+1,求f(x)
已知f(x+1)+2f(-x)=3x²+x,求f(x)
求f(x)=(x-2)^2/(x+1),f(x)=(x^2+9)(x-3/x)的导数.
F(x)=3x^2+2x-1 求F(x+△x)-f(x)/ △x
设函数f(x)满足f(x)+2f(1/x)=x,求f(x)
已知二次函数f(x)满足f(3x+1)=9x^2-6x+5,求f(x)
f(x)=1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4)+.1/(x+9)(x+10) 求
f[(3x+2)/2x-1]=x^2-1,求:f(1),f(x)
f(x+1)=2x平方-3x+1,求f(-1),f(x-1)