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Let g(x) = log (f(x)) where f(x) is twice differentiable positive function on (0,oo)such that f(x+1)=xf(x) then for N = 1,2,3 and g''(N+1/2)-g''(1/2) = k (1+(1)/(9)+1/25+......+1/((2N-1)^2)) then 'k' is |
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