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If $ f' $ is continuous, use l'Hospital's Rule to show that$$ \displaystyle \lim_{h\to 0} \frac{f(x + h) - f(x - h)}{2h} = f'(x) $$Explain the meaning of this equation with the aid of a diagram.

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02:22

Wen Zheng

01:50

Amrita Bhasin

Calculus 1 / AB

Calculus 2 / BC

Chapter 4

Applications of Differentiation

Section 4

Indeterminate Forms and l'Hospital's Rule

Derivatives

Differentiation

Volume

Missouri State University

Campbell University

Oregon State University

University of Michigan - Ann Arbor

Lectures

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01:10

If $f^{\prime}$ is continu…

01:34

(a) Let $f^{\prime}(x)$ be…

01:18

If $ f" $ is continuo…

04:58

Let $f^{\prime \prime}(x)$…

If $f^{\prime \prime}$ is …

Mhm. For this problem. Um Since the limit is in the indeterminate form 0/0, we'll use low Patel's rule and that's going to give us um F of X. Class H minus F of X minus H. All over to H. Um And since we're applying the limit as H goes to zero, what we end up getting is when we take the derivative, since we can't do that, we're going to get F prime have expressed H I'm 1 uh-. That's gonna be, we're gonna multiply that by negative one. Eventually it'll be plus after prime of X minus H. And this is all gonna be over to. So based on this, when we plug in H equals zero. Now we get two F prime of X over two. So it's just going to give us f prime of X. Um as our final answer and therefore we've proven this.

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