Confused at a fairly simple step in an improper integral

[glmrkl]

Homework Statement

http://puu.sh/fYQQj/12819720c6.png
My question is in the attempt at the solution (Number 3)

2. Homework Equations

The Attempt at a Solution

I know how to get to lim t→∞ 1/(1-p) * (t^(1-p) - 1^(1-p)), I'm not sure what to do to get the 1 instead of 1^(1-p) in the above image

 

[Nathanael]

I'm not sure what to do to get the 1 instead of 1^(1-p) in the above image

I'm not exactly sure which part you're referring to. But 1 to any power (including 1-p) is just 1.

 

[glmrkl]

I was referring to the part highlighted in red which is the simplified form after you solve the integral for x=t and x=1. I was wondering why they had just put 1 instead of 1^1-p

Well, this is embarrassing :(... thanks nonetheless!

 

[HallsofIvy]

At least it let's the rest of us feel superior! (Until we make a similar careless mistake.)