Answer:
254.469
Step-by-step explanation:

First let

, so that

to write the integral as

Now recall that

, so substituting

should do the trick. The integral then becomes
Answer:

Step-by-step explanation:
Using the rule of exponents
⇔ 
Given
=
= 
Two lines that intersect to create a 90 degree angle
Anything to a negative power becomes the inverse with the coefficient to a positive power.
For example, 3^-1 becomes 1/3^1 or just 1/3.
3^-2 would be 1/3^2 or 1/9.