Question
Determine whether each improper integral converges or diverges, and find the value of each that converges.$$\int_{-\infty}^{-2} \frac{2}{x^{3}} d x$$
Step 1
We can do this by introducing a variable, say $a$, and taking the limit as $a$ approaches $-\infty$. So, we have: $$\int_{-\infty}^{-2} \frac{2}{x^{3}} d x = \lim_{a \to -\infty} \int_{a}^{-2} \frac{2}{x^{3}} d x$$ Show more…
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