[功課] Euler's Method

[fuyen6 (最帥的~小符~)]

(a)Use Euler's method with step size 0.2 to estimate y(0.4)

   when y(x) is the solution of the initial-value problem


               y'=2xy2  y(0)=1

(b)Repeat part (a) with step size 0.1

(c)Find the exact solution of the differential equation and

   compare the value  at 0.4 with the approximations in

    part(a)and(b).

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