integral from pi-α to 2pi of-1

解答

\int_{π - α}^{2 π} - 1

- π - α

求解步骤

\int_{π - α}^{2 π} - 1 d α

常数积分:

\int a d x = a x

= [(- 1) α]_{π - α}^{2 π}

化简

= [- α]_{π - α}^{2 π}

带入上下限计算后得:

- π - α

= - π - α

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