If $y = \frac{\tan x}{e^x}$, find $dy/dx$.
University of Ilorin MTH102 2025A past question
- $\frac{\sec^2 x - \tan x}{e^x}$
- $\frac{\tan x - \sec^2 x}{e^x}$
- $\frac{\sec^2 x + \tan x}{e^x}$
- $\frac{\sec^2 x}{e^x}$
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