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Evaluate the integral using any appropriate algebraic method or trigonometric identity.

Ask by Ortiz Chambers. in the United States
Jan 21,2025

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Answer

The integral evaluates to .

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To evaluate the integral
we can start by performing polynomial long division since the degree of the numerator is higher than the degree of the denominator.
  1. Perform Polynomial Long Division:
Dividing by :
  • The first term in the quotient is .
  • Multiply by which gives:
  • Subtracting this from the original numerator gives:
  • The next term in the quotient is .
  • Multiplying by gives:
  • Subtracting this gives:
  • The last term is as a constant term.
  • Multiply by :
  • Subtracting gives:
So, we have:
  1. Rewriting the Integral:
Now substituting this back into the integral:
  1. Integrating Each Term:
We can integrate each term separately:
Calculating these integrals:
  • ,
  • ,
  • ,
  • For , we use the substitution , or :
Combining all the results:
where is the constant of integration.
Thus, the evaluated integral is:
[
\int \frac{3\theta{3}-7\theta{2}+13\theta}{3\theta-4} , d\theta = \frac{\theta^3}{3} - \frac{\theta^2}{2} + 3\theta + 4 \ln |3\theta

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