WBJEE 2022 Math Solved Paper

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Question : 11 of 75

Marks: +1, -0

If y=etan−1x then

(1+x2)y2+(2x−1)y1=0
(1+x2)y2+2xy=0
(1+x2)y2−y1=0
(1+x2)y2+3xy1+4y=0

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