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scoundrel [369]
3 years ago
13

How do you do this question?

Mathematics
1 answer:
LiRa [457]3 years ago
3 0

Step-by-step explanation:

arctan(x) is less than π/2 for x > 0.  Therefore, if we say g(x) = 13 (π/2) / eˣ, then f(x) < g(x) for all values of x > 0.

g(x) = 13 (π/2) / eˣ

g(x) = 13π/2 · (1/e)ˣ

So g(x) is a geometric series where r = 1/e.  Since |r| < 1, the series converges.

Since g(x) converges, the smaller f(x) also converges.

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