设f (x)={2x+1(x≥0),x²+4(x
设f (x)={2x+1(x≥0),x²+4(x
设函数f(x)=x-[x],x≥0,f(x+1),x
设f(x-1)={-sinx/x,x>0;2,x=0;x-1,x
设f(x)=x㏑(1+x^2),x≥0.(x^2+2x-3)e^(-x),x<0,求∫f(x)dx
设f(x)=x(x+1)(x+2).(x+100),则f '(0)=
设f(x)=1-x,(x
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
已知函数f(x)=x²+x+1,x≥0;2x+1,x
设函数f(x)满足f(x)+2f(1/x)=x,求f(x)
设函数f(x)={x^2+1(x>=0) ,-2x(x
设函数f(x)={(x-2)2,x>1:x,-1≤x≥1:x+1,x
设2f(x)cos x=d/dx [f(x)]²,f(0)=1,则f(x)=