Teaching MPPSC Assistant Professor Mock Test Series 2025 Engineering Mathematics Calculus

If y = tan-1 x, then

1
(x2 + 1) yn+2 + 2nx yn+1 + n(n +1) yn = 0
2
(x2 + 1) yn+1 + 2nx yn + n(n - 1) yn-1 = 0
3
(x2 + 1) yn+1 - 2nx yn + n(n - 1) yn-1 = 0
4
(x2 + 1) yn+2 - 2nx yn+1 + n(n + 1) yn = 0
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