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Find the a(8) and a(15) whose nth term i...

Find the `a_(8) and a_(15)` whose nth term is `a_(n)={:((n^(2)-1)/(n+3)", n is even," n in N), ((n^(2))/(2n+1)", n is odd," ninN):}`

Text Solution

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The correct Answer is:
`a_(8)=(63)/(11)`
`a_(15)=(225)/(31)`
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