integral from 0 to 0.4 of x^2

解答

\int_{0}^{0.4} x^{2} d x

0.02133 \dots

求解步骤

\int_{0}^{0.4} x^{2} d x

使用幂法则

= [\frac{x ^{3}}{3}]_{0}^{0.4}

化简

= [0.33333 \dots x^{3}]_{0}^{0.4}

带入上下限计算后得:

0.02133 \dots

= 0.02133 \dots

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