f(x)+f((x-1)/x)=2x; x!=0,1; 求f(x)
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f(x)+f((x-1)/x)=2x; x!=0,1; 求f(x)
f(x)+f[(x-1)/x]=2x x不等于0,1.求f(x).
max{f(x),g(x)}=1/2(f(x)+g(x)+|f(x)-g(x)|
f(X)=f(X+2)(x
f(x)={2x+1,x
f(x)={1+x/2,x
f(x)=(x-1)/(x+2)
f(x)=x^2+x (x
f(x+1)=f(1-x)怎么得出f(-x)=f(x+2)