Please help explaining this example. I am trying to understandit. Hence, clear written or typed explanation will be deeplyappreciated. Thank you

Solve the following ODE'S (Ordinary differential Equation) problem by using FEM (Forward Euler Method), MEM (Modify Euler Method), & RK2 (Runge-Kutta Method) and compare the results vs the exact solution. y' = -2y2 + e -2y2 +e-2t, y(0) = 1