题目内容
利用数学归纳法证明不等式“A.
=
<
=k+2
B.
=
<
<k+2
C.
=
<
=k+2
D.
=
=
<
=
<
=k+2
解析:当n=k时,
<k+1,
当n=k+1时,![]()
=
=k+2.
答案:D
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题目内容
利用数学归纳法证明不等式“A.
=
<
=k+2
B.
=
<
<k+2
C.
=
<
=k+2
D.
=
=
<
=
<
=k+2
解析:当n=k时,
<k+1,
当n=k+1时,![]()
=
=k+2.
答案:D