Whatsubey

How do I get from integral[sin(sqrt(x))] to 2{integral[u(sin(u))]} when u = sqrt(x) & du = 1/[2sqrt(x)]? I understand each part after this, but how does that work?

Recently I've been wanting to buy an iPhone, but the price per month of a smart phone gets to me. I was looking at costs for an iPhone: minutes, messaging, data. I figured since now with apps, you can call and text people with wifi (data), could I purchase an iPhone (full price), get just data per month, and then use apps like skype or stuff to do testing and calling? Is data by itself available to the iPhone just like the iPad? Would my plan work, and are there any problems with my plan?

I just bought a black morphsuit recently and I wanted to make a costume by adding stuff to it. Does anyone have any cool ideas on what to be for halloween that uses my morphsuit?

The shortest distance from the curve xy = 4 to the origin is:

There are two lines through the point (2,-3) that are tangent to the parabola y = x^2+x. Find the x-coordinates of the points where these lines touch the parabola. Please explain how to do, I am so confused on this question.

Let y = f (x). If xy^3 + xy = 6 and f (3) = 1, find f ' (3).

Title says it all. If you know the episode name, and which season and episode it is, it would be greatly appreciated.

Is it better that Soviet was split up into Ukraine, Latvia, Lithuania, Poland, Estonia and Russia than staying as one country? Explain your reasoning

What kind of shoes are currently popular for teens where you live? (and where do you live?)

What kind of shoes do you think will be popular for teens in the very soon future?

I enjoy watching OwnagePranks, Edbassmaster, Remi Gaillard (nqtv), some of Wafflepwn, and many other stupid funny stuff.

It wont allow me to post on the message board, what wrong?