Which of the following is a solution of the following equation valid near the origin for x>0? 2x2(1- х)у"- x(1+7x)у +у%30 1 xn+1 y= X+ > 15 n=1 (2n+3)(2n+5) 1 2 (2n- 3)(2n- 5)xn+1 15 n =1 y= x + O (-1)"x"+1 (2n- 3)(2n- 5) 1 15 n =1 1 E (2n+ 3)(2n+ 5)x+1 15 n =1 y=x+

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