# Find the integral?

1. Jan 1, 2014

### Nerd10

1. The problem statement, all variables and given/known data
Find the integral of (x-4)/x^2 dx from 1 to 2.

2. Relevant equations
Do I divide the denominator? I got 1/x-4/x^2 from 1 to 2. But what to do next?

3. The attempt at a solution
The answer is ln(2)-2.

2. Jan 1, 2014

### scurty

There are multiple methods to solve this integral, but the method you chose (dividing through by the denominator) is probably the easiest. The integral of two functions added together is the sum of the individual integrals of the functions: $\int (f(x)+g(x))dx=\int f(x)dx+\int g(x)dx$

3. Jan 1, 2014

### Staff: Mentor

Are you able to integrate 1/x^2 ? If so, then multiply the result by -4 and you'll have this problem half-solved.

4. Jan 2, 2014

### Nerd10

Can it be 1/x^2=x^-2? And I integrate from there?

5. Jan 2, 2014

### Nerd10

Never mind. I got it. Thanks for the help.

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted