面积 1-x^2,|x|

解答

面积

1 - x^{2}, ∣ x ∣

\frac{5 5 - 7}{6}

十进制

0.69672 \dots

求解步骤

使用面积公式:

\int_{- \frac{- 1 + 5}{2}}^{\frac{5 - 1}{2}} 1 - x^{2} - ∣ x ∣ d x

解

\int_{- \frac{- 1 + 5}{2}}^{\frac{5 - 1}{2}} 1 - x^{2} - ∣ x ∣ d x : \frac{5 5 - 7}{6}

面积为:

= \frac{5 5 - 7}{6}

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