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detailed solution
Correct option is C
dydx−tan2xcos2xy=cos2x I.E. =e-∫tan2xcos2xdxdx=e-∫2tanx1-tan2xsec2x dxput tanx=t, sec2x dx=dt=e∫-2t1-t2dt=elog(1-t2)=1-tan2x Solution of D.E is y(1-tan2x)=∫(1-tan2x)cos2xdxy1-sin2xcos2x=∫1-sin2xcos2xcos2x dxycos2xcos2x=∫cos2x dxycos2xcos2x=sin2x2+C When x=π/6,y=338338cosπ3cos2π6=sinπ32+C3381234=322+C⇒C=0ycos2xcos2x=sin2x2y=12tan2xcos2xTalk to our academic expert!
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