How Do You Integrate (2x^2+1)/x?

In summary, the conversation is about integrating the expression (2x^2+1)/x and whether it should be split into two integrals or subtracted. The solution is to split it into two integrals, 2x and 1/x. The suggestion to subtract is not correct.
  • #1
shseo0315
19
0

Homework Statement



I haven't done much math for years.

just a little reminder would be very appreciated.

when you take integral for (2x^2+1)/x dx

I believe this can break down into integral 2x dx + integral 1/x dx

What I wondered about was is this summation of those two as written above

or the subtraction (integral 2x dx - integral 1/x dx)

thanks.

Homework Equations





The Attempt at a Solution

 
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  • #2
You have it right. The integral can be split into two integrals like you have.
 
  • #3
[tex]\frac{2x^2+ 1}{x}= \frac{2x^2}{x}+ \frac{1}{x}= 2x+ \frac{1}{x}[/tex]

Why would you even consider changing the "+" to "-"?
 

Related to How Do You Integrate (2x^2+1)/x?

1. What is the process for integrating (2x^2+1)/x dx?

The process for integrating (2x^2+1)/x dx involves breaking down the expression into smaller parts, using the power rule and basic integration techniques to solve for each part, and then combining the results to find the final solution.

2. Can the expression (2x^2+1)/x dx be simplified before integration?

Yes, the expression can be simplified by factoring out the common term x, which will result in 2x+1 being left in the numerator.

3. Is the integration of (2x^2+1)/x dx affected by the coefficient 2 in front of x^2?

Yes, the coefficient 2 will need to be included in the integration process. It will be brought down in front of the x^2 term and then integrated as usual.

4. What are the limits of integration for (2x^2+1)/x dx?

The limits of integration will depend on the specific problem or application. They may be given in the problem or can be determined based on the given context.

5. What are some common mistakes to avoid when integrating (2x^2+1)/x dx?

Some common mistakes to avoid when integrating (2x^2+1)/x dx include forgetting to include the coefficient 2, miscalculating the integral of x^2, and not being careful with negative signs. It is also important to check for any potential algebraic errors when simplifying the expression before integration.

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