integral from 1 to 3 of (cos(x))/x

解答

\int_{1}^{3} \frac{cos ( x )}{x} d x

Ci (3) - Ci (1)

十进制

- 0.2177741369

求解步骤

\int_{1}^{3} \frac{cos ( x )}{x} d x

这是非初等函数积分:

\int \frac{cos ( x )}{x} d x = Ci (x)

= [Ci (x)]_{1}^{3}

带入上下限计算后得:

Ci (3) - Ci (1)

= Ci (3) - Ci (1)

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