Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Math Challenge (Derivatives)?
Find f'(x) by using the definition of the derivative.
Use f'(x)= [f(x+h)-f(x)]/h
f(x)=4
First of all thank you for the link and the answer Matt D.
I already know how to do problems of derivatives similar to the video but I just can't seem to get my head around problems with out a variable or "x". And yes I did know the answer was zero. But could you please break it down for me. Thanks.
Thanks Brian. I understand! And also Matt D thank you very much for the link! I will refer to it through out the year! :]
2 Answers
- Anonymous1 decade agoFavorite Answer
Note that if f(x) = 4, then f(x + h) = 4 as well. Thus, the definition of the derivative reduces to:
f'(x) = lim (h-->0) [f(x + h) - f(x)]/h = lim (h-->0) (4 - 4)/h = lim (h-->0) 0/h = 0.
I hope this helps!
- 1 decade ago
The answer is 0, but instead of trying to explain things, here is a link to a guy that was a HUGE help to me when I took calc. He is the #1 reason I made it out with a B. Here is a link to the video you need for this problem, but the rest can be found on www.justmathtutoring.com
