f(10^x)=x^2,f(5)=
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
f(X)=f(X+2)(x
设函数f(x)={x-3(x≥10) f(f(x+5))(x
设f(x)=x-2(x大于等于10),f(x)=f[f(x+6)](x
F(1)=5,F(x)*F(x+2)=13,求F(x)
f(x+2)>=f(x)+2,f(x+3)
f(2-x)=f(x)
已知函数f(x)=3x²-5x+2,求f(f(x))=
任意x都有2f(x)+f(-x)=10²,求f(x),
maple plot([f(x),f(x)+2,f(x)+4,f(x)+6],x = -10 ..10,y = -10
已知f(x)满足f(x)+2f(-x)=x2+5x+9,求f(x)