面积 3ln(x),xln(x),1,2

解答

面积

3 ln (x), x ln (x), 1, 2

0.52258 \dots

求解步骤

使用面积公式:

\int_{1}^{2} ∣ 3 ln (x) - x ln (x) ∣ d x

解

\int_{1}^{2} ∣ 3 ln (x) - x ln (x) ∣ d x : 0.52258 \dots

面积为:

= 0.52258 \dots

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