Numerical Methods: Euler to Runge–Kutta · Easy problem

The midpoint method takes the step $y_1 = y_0 + h\, f\!\left(t_0 + \dfrac{h}{2},\ y_0 + \dfrac{h}{2} f(t_0, y_0)\right)$. Apply one step with $h = \dfrac{1}{2}$ to $y' = y$, $y(0) = 2$. Express your answer as a common fraction.