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已知函數(shù)y=f(x)(x∈R)滿足f(x+1)＝f(x-1)且當(dāng)x∈[-1,1]時，f(x)=x²，則y=f(x)與的圖象的交點個數(shù)為(     )

A. 3      B. 4      C. 5      D. 6

已知函數(shù)y=f(x)(x∈R)滿足f(x+1)＝f(x-1)且當(dāng)x∈[-1,1]時，f(x)=x²，則y=f(x)與的圖象的交點個數(shù)為(    )

A. 2                              B. 3                                        C. 4                                        D. 5

已知函數(shù)y=f(x)(x∈R)滿足f(x+1)＝f(x-1)且當(dāng)x∈[-1,1]時，f(x)=x²，則y=f(x)與的圖象的交點個數(shù)為(    )

已知函數(shù)y=f(x)(x∈R)滿足f(x+1)＝f(x-1)且當(dāng)x∈[-1,1]時，f(x)=x²，則y=f(x)與的圖象的交點個數(shù)為(     )