题目内容
已知函数f(x)满足:f(x)=x2+2x·(1),其中(1)为非零常数,则(0)等于
A.0
B.2
C.-2
D.-4
A.a<b<c B.b<c<a
C.c<b<a D.c<a<b
已知函数f (x)满足:f ( p + q) = f ( p) f (q),f (1) = 3,则+ +++的值为_______________.