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Single Variable Calculus

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Moderate

Trigonometric Substitution 2

SVCALC-4W6YIA

Evaluate the integral:

$$\int \frac{4}{x^2+16} dx$$

A

$\cfrac{1}{4}\arccos x+C$

B

$\cfrac{1}{4}\arctan x+C$

C

$\arccos \cfrac{x}{4}+C$

D

$\arctan \cfrac{x}{4}+C$