神马作文网f(2x+1)=x^2-2x,则f(3)=___________
f(2x+1)=x^2-2x,则f(3)=___________
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)
f（x)=根号（X平方+2*X-3）的单调减区间是___________.
3f(x)+2f(1/x)=2x,则f(x)=?
已知f(x)满足2f(x)+f(1/x)=3x,则f(x)=
f(x)满足f(x)+2f(1/x)=3x,则f(x)=_______
f(x+2)>=f(x)+2,f(x+3)
f(x)+2f(-x)=3x+x的平方,则f(x)等于
已知f(x+1)+2f(-x)=3x²+x,求f(x)