{"result":{"text":"If space x subscript n equals fraction numerator 1 minus 2 plus 3 minus 4 plus 5 minus 6 plus.... negative 2 n over denominator square root of n squared plus 1 end root plus square root of 4 n squared minus 1 end root end fraction then space stack lim space with straight n space infinity below space is space equal space to"},"status":"ok"}