1.

The integrating factor of the differential equation \[\frac{dy}{dx}=y\tan x-{{y}^{2}}\sec x,\]is               [MP PET 1995; Pb. CET 2002]

A.                 \[\tan x\] 
B.                 \[\sec x\]
C.                 \[-\sec x\]
D.                 \[\cot x\]
Answer» C.                 \[-\sec x\]


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