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## Homework Statement

Hey guys. Basically I have a wavefunction that looks like this

http://imageshack.com/a/img843/3691/22r3.jpg [Broken]

I have to find:

(a) The normalization constant N, of course by normalizing it

(b) Find <x> and <x^2> and use this to find Δx.

## Homework Equations

I'm just gona insert images, as I'm writing it all with my tablet:

http://imageshack.com/a/img33/5705/czbs.jpg [Broken]

## The Attempt at a Solution

Okay, so I've found the normalization constant, N, but I've got 2 different answers depending on the way in which I solve the problem, and I want to know which is correct (and why, if possible). Please view the image below:

http://imageshack.com/a/img11/7232/0hmb.jpg [Broken]

So...which is correct? :S

I need to know the explicit expression for the probability density to proceed further.

Thanks a lot guys!

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