【紧急】方程组 2f(x)+f（1/x)=3x 2f(1/x)+f(x)=3/x 答案2x-1/x

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) f(x)=x(x-1)(x-2)(x-3)(x-4) f'(1)=? F(x)=3x^2+2x-1 求F(x+△x)-f(x)/ △x f(x-1)=x^2-2x+3(x f(x)=(x-1)(x-2).(x-3)求导 设函数f(x)满足f(x)+2f(1/x)=x,求f(x) f(x)=方程组x^2+1 x>0 2x-3 x小于等于0 求f【f(1)】=多少?f(3)+f(-3)=多少? f(x)=x/(x^2+1)