Can this algebraic integral be solved using trigonometric substitutions?

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In summary, the given integral can be rewritten as two simpler integrals, one of which can be integrated using a substitution and the other using a trigonometric substitution.
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utkarshakash
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Homework Statement


[itex] \int \dfrac{x+2}{\sqrt{(x-2)(x-3)}} dx [/itex]

The Attempt at a Solution



I've tried substitutions like assuming (x-2) = t^2 or x= 1/t or x=1/t^2, but none of them seems to ease the problem. Breaking the integral into two helps to integrate the second but first integral still remains complicated. I'm also sure that trig substitutions won't work here.
 
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  • #2
utkarshakash said:

Homework Statement


[itex] \int \dfrac{x+2}{\sqrt{(x-2)(x-3)}} dx [/itex]

The Attempt at a Solution



I've tried substitutions like assuming (x-2) = t^2 or x= 1/t or x=1/t^2, but none of them seems to ease the problem. Breaking the integral into two helps to integrate the second but first integral still remains complicated. I'm also sure that trig substitutions won't work here.

Rewrite the given integral as [itex] \frac{1}{2} \int \dfrac{2x-5}{\sqrt{x^2-5x+6}} dx [/itex] + [itex] \frac{9}{2}\int \dfrac{1}{\sqrt{(x-\frac{5}{2})^2-(\frac{1}{2})^2}} dx [/itex]

I hope the two integrals are easy to handle .
 

FAQ: Can this algebraic integral be solved using trigonometric substitutions?

What is an algebraic integral?

An algebraic integral is an integral that involves only algebraic functions, such as polynomials, logarithms, and trigonometric functions. It is a mathematical expression that represents the area under a curve in a given interval.

How do you solve an algebraic integral?

To solve an algebraic integral, you need to use integration techniques, such as substitution, integration by parts, or partial fractions, to transform the integral into a simpler form. Then, you can use known formulas or tables to evaluate the integral.

Can all algebraic integrals be solved?

No, not all algebraic integrals can be solved analytically. Some integrals are considered unsolvable, and their solutions can only be approximated using numerical methods.

What are some common mistakes to avoid when solving algebraic integrals?

Some common mistakes to avoid when solving algebraic integrals include forgetting to use the chain rule, making incorrect substitutions, and forgetting to include the constant of integration.

What are some real-life applications of algebraic integrals?

Algebraic integrals have many real-life applications, such as calculating the volume of irregular shapes, determining the work done by a variable force, and finding the center of mass of an object. They are also used in physics, engineering, and economics to model and solve various problems.

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