Question
Find the indefinite integral.$\int \frac{1}{\theta^{2}} \cos \frac{1}{\theta} d \theta$
Step 1
Let's set $u = \frac{1}{\theta}$. Then, the derivative of $u$ with respect to $\theta$ is $du = -\frac{1}{\theta^2}d\theta$. Show more…
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