diff-equation

Question: The solution of the differential equation $3{{e}^{x}}\tan ydx+(1-{{e}^{x}}){{\sec }^{2}}ydy=0$ is



1) $\tan y=c{{(1-{{e}^{x}})}^{3}}$
2) ${{(1-{{e}^{x}})}^{3}}\tan y=c$
3) $\tan y=c(1-{{e}^{x}})$
4) $(1-{{e}^{x}})\tan y=c$
Solution: Explanation: No Explanation
Variable separable type differential equations

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