Use Euler's method with step size $0.2$ to compute the approximate $y$-values $y_1,$ $y_2,$ $y_3,$ $y_4,$ and $y_5$ of the solution of the initial-value problem $$y' = 1-x y, \quad y(0)=0.$$

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1. $y_1 =$ 2. $y_2 =$ 3. $y_3 =$ 4. $y_4 =$ 5. $y_5 =$

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