You reduce to and say that that is equal to h. That is your mistake. (for h not equal to 0).
I have been doing a difference quotient problem for homework and can't seem to get it right.
The problem is this:
Find f(x+h)-f(x)/h where h=/=0 given the function x^2-x+4.
By following my teacher's instructions I did this and got this answer:
However, I am told the problem is wrong, and I have tried doing it several times, and I can't seem to get the correct answer..
Any help would be greatly appreciated. Thank you very much in advance.
While looking at the problem I found a place where I made a mistake and I still got the wrong answer having taken that mistake into consideration:
the mistake was where -(x^2-x+4) were concerned the correct way would have been -x^2+x-4 not -x^2-x-4.
After doing that I get the answer 3x+h which is also incorrect.
Mr. fantastic, I did the first part over and I see that you are correct in that, *embarassed*.
Does this mean if I divide it by h the answer would be .. 2x+h? I'm sorry, I'm not very good at this..
And thank you for your reply. (:
Forgive me for asking too many silly questions here..
Let me use a picture to explain what I'm doing (trying another way since 2x+h is incorrect):
? If not then should I divide the h in parenthesis by the h below as well to make it 2x-1?
Thank you again for your reply
Edit: The answer is 2x+h-1, thank you very much mr. fantastic!!