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[" 5.If "a(n)=sqrt(7+sqrt(7+sqrt(7+....)...

[" 5.If "a_(n)=sqrt(7+sqrt(7+sqrt(7+....)))" has "n" radical signs,then by the "],[" method of mathematical induction,which is true? "],[[" (a) "a_(n)<7AA n>=1," (b) "a_(n)>7AA n>=1],[" (c) "a_(n)<4AA n>=1," (d) "a_(n)<3AA n>=1]],[" -an "," (AIEEE "2002)]

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