[" 25If "a(1),a(2),a(3),...,a(n)" are in...

[" 25If "a_(1),a_(2),a_(3),...,a_(n)" are in "AP," where "a_(i)>0" for all "i," then the value of "],[(1)/(sqrt(a_(1))+sqrt(a_(2)))+(1)/(sqrt(a_(2))+sqrt(a_(3)))+cdots+(1)/(sqrt(a_(n-1))+sqrt(a_(n)))" is "],[[" a."(n-1)/(sqrt(a_(1))+sqrt(a_(n)))," b."(n+1)/(sqrt(a_(1))+sqrt(a_(n)))," c."(n-1)/(sqrt(a_(1))-sqrt(a_(n)))," d."(n+1)/(sqrt(a_(1))-sqrt(a_(n)))]]

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