1.

The solution of the differential equation \[3{{e}^{x}}\tan ydx+(1-{{e}^{x}}){{\sec }^{2}}ydy=0\] is [MP PET 1993; AISSE 1985]

A. \[\tan y=c{{(1-{{e}^{x}})}^{3}}\]
B. \[{{(1-{{e}^{x}})}^{3}}\tan y=c\]
C. \[\tan y=c(1-{{e}^{x}})\]
D. \[(1-{{e}^{x}})\tan y=c\]
Answer» B. \[{{(1-{{e}^{x}})}^{3}}\tan y=c\]


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