# OCR A Level: Core 4 - Differential Equations [June 2012 Q4]

**Calculus**Level pending

Solve the differential equation \[\large e^{2y} \dfrac{dy}{dx} + \tan x = 0 \] given that \(x=0\) when \(y=0\). Give your answer in the form \(y= f(x)\).

**If \(f(2 \pi) = a\), input \(a\) as your answer.**