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已知等差数列{an}中,a2=7,a4=15,则前10项的和S10= .
已知等差数列{an}中,a2=7,a4=15,则前10项的和S10= .
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的最小值为
.
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如果若干个函数的图象经过平移后能够重合,则称这些函数为“互为生成”函数.给出下列函数:
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D.
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