Suppose that we use Euler's method to approximate the solution to the differential equation

𝑑𝑦/𝑑π‘₯=π‘₯^4/𝑦 𝑦(0.1)=1

Let 𝑓(π‘₯,𝑦)=π‘₯^4/𝑦.
We let π‘₯0=0.1 and 𝑦0=1 and pick a step size β„Ž=0.2. Euler's method is the the following algorithm. From π‘₯𝑛 and 𝑦𝑛, our approximations to the solution of the differential equation at the nth stage, we find the next stage by computing

1 answer

  1. at (0.1 , 1 )
    slope = dy/dx = (0.1)^4 /1 = (10^-1)^4 = 10^-4
    at x = x + h = 0.1 + 0.2 = 0.3
    Using Euler
    our guess at y = 1 + h (dy/dx) = 1 + 0.2 * 10^-4 = 1 +0.00002 = 1.00002

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