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September 29th, 2018, 09:49 AM  #1 
Newbie Joined: Sep 2018 From: Canada Posts: 2 Thanks: 0  Struggling with 2 integration problems
So while I'm pretty confident about what the final answers are,but the way I solved the question and the steps they want us to do aren't really matching so I was hoping someone could help me out with these steps?

September 29th, 2018, 11:05 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 19,701 Thanks: 1804 
Can you post clearer images? Regarding the first example, as the function to be integrated uses √x, it makes sense to try substituting x = u², where u is nonnegative. As x = u² implies dx/du = 2u, the substitution results in an easier integral in the example presented. 
September 29th, 2018, 07:36 PM  #3 
Newbie Joined: Sep 2018 From: Canada Posts: 2 Thanks: 0 
Yeah that makes sense. So what would the next step be, where I got the answers wrong?

September 30th, 2018, 01:37 AM  #4 
Global Moderator Joined: Dec 2006 Posts: 19,701 Thanks: 1804 
The image is too fuzzy for me to read it.


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