Solving Tricky Integrals: What Technique to Use?

[asdnator]

Homework Statement

Which technique i should use to solve these integrals?

Homework Equations

The Attempt at a Solution

 

[vela]

Homework Statement

Which technique i should use to solve these integrals?

Homework Equations

The Attempt at a Solution

Use the Feynman technique:

1. Write down the problem.
2. Think really hard.
3. Write down the solution.

 

[vela]

For #5, there's an obvious substitution to try.

For the remaining two, look in your notes and book for techniques to try and take a stab at them. You have to show a reasonable attempt before you can get help here.

 

[asdnator]

Is it right?

 

[Mark44]

Is it right?

You can check it yourself. Take the derivative of your answer. If it's correct, you should end up with the integrand. This is something you should make a habit of doing.