Teaching TN TRB EE Test Series Engineering Mathematics Differential Equations

Integrating factor of \(\frac{{{\rm{dx}}}}{{{\rm{dy}}}} + {\rm{x}}\tan {\rm{y}} = \sin 2{\rm{y}}\) is –

1
\({\rm{sec\;y}}\)
2
\({\sec ^2}{\rm{y}}\)
3
\({\sec ^2}{\rm{x}}\)
4
\({\rm{sec\;x}}\)
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