UPSC NDA 2 2019 Mathematics Solved Paper

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Question : 96 of 120

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The differential equation which represents the family ofcurves given by tany=c(1–ex) is:

[NDA II 2019]

ex‌tan‌y‌d‌x+(1–ex)dy=0
ex‌tan‌y‌d‌x+(1–ex)sec2ydy=0
ex(1–ex)dx+tan‌y‌d‌y=0
ex‌tan‌y‌d‌y+(1–ex)dx=0

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