A.f(0)是f(x)在(-a,A.的極大值,但不是最大值 B.f(0)是f(x)在(-a,A.的最小值 C.f(0)足f(x)在(-a,A.的極大值,也是最大值 D.f(0)是曲線y=f(x)的拐點(diǎn)的縱坐標(biāo)
A.a=-4,b=1 B.a=4,b=-7 C.a=0,b=-3 D.a=b=1
A.有3個(gè)極值點(diǎn) B.有3個(gè)拐點(diǎn) C.有2個(gè)極值點(diǎn) D.對(duì)稱原點(diǎn)