integral from 0 to L of x^3

解答

\int_{0}^{L} x^{3} d x

\frac{L ^{4}}{4}

求解步骤

\int_{0}^{L} x^{3} d x

使用幂法则

= [\frac{x ^{4}}{4}]_{0}^{L}

带入上下限计算后得:

\frac{L ^{4}}{4}

= \frac{L ^{4}}{4}

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