In Exercises 1-4, use EulersMethod to perform Euler's method with the given step size At on the given initial-value problem over the time interval specified. Your answer should include a table of the approximate values of the dependent variable. It should also include a sketch of the graph of the approximate solution. dy 1. = 2y + 1, y(0)=3, 0≤t≤2, At=0.5 dt dy (0)=1 05+51 At-025

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