f(-2+x)=-f(-x)=-f(x)怎么得到f(4+x)=-f(x+2)=f(x)?
f(X)=f(X+2)(x
f(x+2)>=f(x)+2,f(x+3)
f(2-x)=f(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)?
设函数f(x)满足f(x)+2f(1/x)=x,求f(x)
已知f(x)满足2f(x)+f(-x)=-3x+1,求f(x)
f(x+2)=1/f(x),f(1)=5;问f(f(x))?
x-2 ,X>=0 f(x)=f[f(x+5)],x分段函数f(x)= x-2 ,X>=0 f[f(x+5)],x
二次函数f(x)满足f(x+1)+f(x-1)=2x^2+4x,求f(x)
f(x+4)=f(x)是什么意思?