已知函数f(x)={x^2+4x,(x≥0) 4x-x^2,(x
问题描述:
已知函数f(x)={x^2+4x,(x≥0) 4x-x^2,(x
答
1.x∈R
f(o)=0;任取x>0,-x
已知函数f(x)={x^2+4x,(x≥0) 4x-x^2,(x
1.x∈R
f(o)=0;任取x>0,-x