If k = tan25^@then(K +1)/(k-1) + ( k-1)/...

If `k = tan25^@`then`(K +1)/(k-1) + ( k-1)/(k+1)`

If k = tan25^@then(K +1)/(k-1) + ( k-1)/(k+1)
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[(k (k + 1)) / (2)] ^ (2) + (k + 1) ^ (3) = [((k + 1) (k + 2)) / (2) +...
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Find the sum of the series sum(k=1)^(360)(1/(ksqrt(k+1)+(k+1)sqrt(k)))
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if Un = |[1 , k , k] , [2n , k^2+k+1 , k^2+k] , [2n-1 , k^2 , k^2+k+1]...
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If k=tan25^(@) then (K+1)/(k-1)+(k-1)/(k+1)
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ak=1/(k(k+1)) for k=1,2,3,4,...n then (sum(k=1)^n ak)^2=
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The sum of the series 1+(k)/(3)+k(k+1)/(3.6)+(k(k+1)(k+2))/(3.6.9)+.. ...
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sum(k=1)^(20)k[(1)/(k)+(1)/(k+1)+(1)/(k+2)+......+(1)/(20)]
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The points (k-1,k+2),(k,k+1),(k+1,k) are collinear for
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