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Pythonで積分

Last updated at 2015-06-28Posted at 2014-03-03

課題

以下の積分を求める。

\int_0^1\dfrac{1}{1+x^2}~dx

実際の解は $\pi/4= 0.78539816339...$

手法

SciPy の scipy.integrate.quad を利用する。

内容

スクリプト

sample.py

from scipy.integrate import quad

answer, abserr = quad(lambda x: 1/(1+x**2), 0, 1)

print answer

実行結果

> python sample.py
0.785398163397

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