Math Problem Statement

用中文解答下9和10题,然后必须出详细的计算过程

用中文解答下9和10题,然后必须出详细的计算过程

Solution

根据你提供的图片,我将针对第9题和第10题进行解答,并提供详细的计算过程。

第9题:

计算定积分:
02πdt108sint\int_{0}^{2\pi} \frac{dt}{10 - 8\sin t}

解答过程:

这个积分的形式是一个标准的三角函数积分,可以使用积分表或通过代数简化来解决。首先,通过代入 sint=2t1+t2\sin t = \frac{2t}{1+ t^2}, 这可以转化为已知的积分公式,

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Math Problem Analysis

Mathematical Concepts

Integral Calculus
Differential Equations

Formulas

Standard integral formula for \( \int \frac{1}{a + b\sin(t)} dt \)
Second-order linear differential equations: \( y'' + py' + qy = f(x) \)

Theorems

Trigonometric substitution in integration
Theory of linear differential equations

Suitable Grade Level

Undergraduate Mathematics