Integrate 1/(x-1)(sqrt(x^2-3x+2))

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In summary, the formula for integrating 1/(x-1)(sqrt(x^2-3x+2)) is ln|x-1| - 1/2sqrt(x^2-3x+2) + C. This integral can be solved using substitution by setting u = x^2-3x+2 and following the steps of performing the substitution, rewriting the integral, using the formula, substituting back, and adding the constant of integration. It is also possible to solve this integral using partial fractions or integration by parts, although these methods may be more complicated and time-consuming.
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Denisse
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Homework Statement



How can I integrate this? I already tried substitution u=x-1 and partial fractions.

∫[dx]/[(1-X^2)√((x^2)-3x+2)]



Homework Equations





The Attempt at a Solution


 
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  • #2
How I'd start would be to first complete the square inside the square root, then do a trigonometric substitution of ##\displaystyle x - \frac{3}{2} = \frac{1}{2} \sec x##. Try it out and see what you get.
 
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  • #3
The integral in your thread title and the integral in your post are different. Which one do you need help with?
 

1. What is the formula for integrating 1/(x-1)(sqrt(x^2-3x+2))?

The formula for integrating 1/(x-1)(sqrt(x^2-3x+2)) is ln|x-1| - 1/2sqrt(x^2-3x+2) + C, where C is the constant of integration.

2. Can this integral be solved using substitution?

Yes, this integral can be solved using the substitution u = x^2-3x+2. This will simplify the integral to 1/(u-1), which can be integrated using the formula mentioned above.

3. What are the steps for solving this integral?

The steps for solving this integral are as follows:
1. Perform substitution u = x^2-3x+2
2. Rewrite the integral as 1/(u-1)
3. Use the formula for integrating 1/(u-1)
4. Substitute back u = x^2-3x+2 and simplify
5. Add the constant of integration C.

4. Is it possible to solve this integral using partial fractions?

Yes, it is possible to solve this integral using partial fractions. However, it may be more complicated and time-consuming compared to using substitution.

5. Can this integral be solved using any other methods?

Yes, this integral can also be solved using integration by parts. However, it may require multiple iterations of integration by parts and can be more complex compared to using substitution or partial fractions.

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