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Eherre1989
 2 years ago
Best ResponseYou've already chosen the best response.0\[\int\limits_{1}^{3}x \sqrt{1(x2)^2}dx\]

Eherre1989
 2 years ago
Best ResponseYou've already chosen the best response.0it has to be a trig substitution i just get stuck when i have to integrate the sins

Mr.Math
 2 years ago
Best ResponseYou've already chosen the best response.1Write what you have so far.

Eherre1989
 2 years ago
Best ResponseYou've already chosen the best response.0\[\int\limits_{}^{}(\sin \theta\sin^3\theta2\sin^2\theta+2)d \theta\]

Eherre1989
 2 years ago
Best ResponseYou've already chosen the best response.0i need that integrated i cant seem to figure out the middle two

Eherre1989
 2 years ago
Best ResponseYou've already chosen the best response.0i feel as if i should do by parts

Mr.Math
 2 years ago
Best ResponseYou've already chosen the best response.1Break it down into four integrals. I'm sure you know how to integrate \(\sin\theta\) and \(2\).

Mr.Math
 2 years ago
Best ResponseYou've already chosen the best response.1For \(\sin^3\theta\), write \(\sin^3\theta=\sin\theta\cos^2\theta\sin\theta\), and then the integral of \(\sin\theta\) is easy. Substitute \(u=\cos\theta\) for the integration of \(\cos^2\theta\sin\theta\).

Eherre1989
 2 years ago
Best ResponseYou've already chosen the best response.0i dont remember any trig identities

Mr.Math
 2 years ago
Best ResponseYou've already chosen the best response.1\(\sin^2\theta=\frac{1\cos(2\theta)}{2}\).

Mr.Math
 2 years ago
Best ResponseYou've already chosen the best response.1Sorry it should be \(2\sin^2\theta=\cos(2\theta)1\).
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