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Score: 5/50 Question 2 ? < > Evaluate the integral: \int \frac{14}{x^2\sqrt{x^2 + 81}} dx (A) Which trig substitution is correct for this integral? $\circ$ x = 81 sin($\theta$) $\circ$ x = 81 tan($\theta$) $\circ$ x = 9 sin($\theta$) $\circ$ x = 14 sec($\theta$) $\circ$ x = 81 sec($\theta$) $\circ$ x = 9 tan($\theta$) (B) Which integral do you obtain after substituting for x and simplifying? Note: to enter $\theta$, type the word theta. $\int$ d$\theta$ (C) What is the value of the above integral in terms of $\theta$? + C (D) What is the value of the original integral in terms of x? + C Question Help: Video Submit Question Jump to Answer

          Score: 5/50
Question 2
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Evaluate the integral: \int \frac{14}{x^2\sqrt{x^2 + 81}} dx
(A) Which trig substitution is correct for this integral?
$\circ$ x = 81 sin($\theta$)
$\circ$ x = 81 tan($\theta$)
$\circ$ x = 9 sin($\theta$)
$\circ$ x = 14 sec($\theta$)
$\circ$ x = 81 sec($\theta$)
$\circ$ x = 9 tan($\theta$)
(B) Which integral do you obtain after substituting for x and simplifying?
Note: to enter $\theta$, type the word theta.
$\int$  d$\theta$
(C) What is the value of the above integral in terms of $\theta$?
+ C
(D) What is the value of the original integral in terms of x?
+ C
Question Help: Video
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Score: 5/50
Question 2
?
<
>
Evaluate the integral: ∫(14)/(x^2√(x^2 + 81)) dx
(A) Which trig substitution is correct for this integral?
∘ x = 81 sin(θ)
∘ x = 81 tan(θ)
∘ x = 9 sin(θ)
∘ x = 14 sec(θ)
∘ x = 81 sec(θ)
∘ x = 9 tan(θ)
(B) Which integral do you obtain after substituting for x and simplifying?
Note: to enter θ, type the word theta.
∫ dθ
(C) What is the value of the above integral in terms of θ?
+ C
(D) What is the value of the original integral in terms of x?
+ C
Question Help: Video
Submit Question Jump to Answer

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