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使用 h = pi/4 的欧拉方法逼近 y(pi/2) ,给定 y' = cos x , y(0) = 0 。与 比较。
使用 h = pi/4 的欧拉方法逼近 y(pi/2) ,给定 y' = cos x , y(0) = 0 。与 比较。
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