1) The solution is supposed to be 2) The solution is supposed to be
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#1) Think of it as Use the power rule like normal.
if i use that i get
Originally Posted by metlx if i use that i get You shouldn't. d/dx x = 1 and d/dx
Originally Posted by metlx if i use that i get HOW do you get that? Please show your work. The power rule: won't give fractional powers if you don't start with them!
aww. i just realized I forgot the square root. 1) is
Originally Posted by metlx aww. i just realized I forgot the square root. 1) is Please read the replies you're getting. There should be NO SQUARE ROOTS unless you simplify after taking the derivative.
no i forgot to add the square root into the initial derivative.. I wrote instead of
by the way, 2) is no longer needed. Managed to solve it
Then your first part if right.
I'm guessing that the solution that is in the book is wrong then?
Originally Posted by metlx I'm guessing that the solution that is in the book is wrong then? I am busy right now so I can't do this for you, but try to get these two terms into one expression. Then see if the book's answer makes more sense.
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