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[" 14.If "a(1),a(2),a(3),......,a(n)" ar...

[" 14.If "a_(1),a_(2),a_(3),......,a_(n)" are in A.P.,where "a_(i)>0" for all "i" ,show that "],[qquad (1)/(sqrt(a_(1))+sqrt(a_(2)))+(1)/(sqrt(a_(2))+sqrt(a_(3)))+....+(1)/(sqrt(a_(n-1))+sqrt(a_(n)))=(n-1)/(sqrt(a_(1))+sqrt(a_(n))).quad " (NCERT EXEMPLA "]

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