f(x)=1/(x-2)+1/(x-5)+1/(x-9)的零点个数

f(x)=5x+3 f(x)=5x f(x)=x+2x+1 f(x)=5x+3 f(x)=5x f(x)=x+2x+1 若函数f(x)满足f(x)+2f(1/x)=5x+4/x,则f(x)= f(x,-x)=x^2+2x,fx(x,-x)=5x+1,则fy(x,-x)= f(x)={2x+1,x f(x)={1+x/2,x f(x)=(x-1)/(x+2) 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+2)=1/f(x),f(1)=5;问f(f(x))? f(x+2)=1/f(x),f(1)=-5,f[f(x)]等于多少? 数学f(x)=x(x+1)(x+2)(x+3)(x+4)(x+5),求f'(0)=? f(x)=2|x-1|+|x-2|+|x-5|+|x-8|+|x-34|,f(x)的最小值是____. 已知f(x)=x(x-1)(x-2)(x-3)(x-4)(x-5),则f‘(0)为 f(x)满足:2f(x)-f(1/x)=x+1,求f(x) 若f(x)满足f(x)-2f(1/x)=x,则f(x)=? 若F(x)满足f(x)+2f(1/x)=x,则f(x)= 设函数f(x)满足f(x)+2f(1/x)=x,求f(x)