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(n+1)2÷(n+1)2+1=0.
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(n+1)2÷(n+1)2+1=0.
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答案和解析
(n+1)²÷[(n+1)²+1]=0.98
1/[(n+1)²+1]=0.02
(n+1)²+1=50
(n+1)²=49
n+1=±7
x=6或x=-8
1/[(n+1)²+1]=0.02
(n+1)²+1=50
(n+1)²=49
n+1=±7
x=6或x=-8
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