- #1
schlynn
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Homework Statement
Ok, I am learning about derivative's, and they seem to elude me for some reason. I have this.
x2+x
I know the derivative is 5, and the function is differentiable at 2. But I don't understand how you get it. I know the limit you use to find it, but the shortcut is nxn-1 right? Where does n come from? And x=2 right? Would it be 2*21? But that's not 5, its 4. What am I doing wrong? Please, detailed answers are very very appreciated.
Homework Equations
Pretty sure that I noted all the nessicary equations above.
The Attempt at a Solution
I said what I attempted above.