integral (course calculus1)

[stud]

I need help please with a basic integral.

 

http://i40.tinypic.com/a589qp.gif

 

These integrals is immediate?

What the general formula?

 

And here, exercises 1 & 4:

http://i43.tinypic.com/zksmck.gif

 

Thanks.

[mooeypoo]

Did you go over integration techniques already in class? What techniques do you know? Lay them out, and we'll help you pick the right one.

[stud]

hey,

i am not learn in the class this forumula, because i need help.

 

thanks.

[mooeypoo]

There's no formula, it's a method. Integrals usually have a few methods you can use that will work. In this case, I'd check to see a method called "Integration by Parts"

 

See here:

http://en.wikipedia.org/wiki/Integration_by_parts

http://mathworld.wolfram.com/IntegrationbyParts.html

[stud]

great friend, its helped me a lot.

thanks.

[Axioms]

The second set of integrals would require a bit more than integration by parts. Look up integration methods on youtube. There should be something there that can help you. Try find something that can help you simplify the main equation and look for something that has an arctan (tan ^-1) for the last equation.