**ever**hold true?

Two young mathematicians discuss derivatives of products and products of derivatives.

- Devyn
- Hey Riley, remember the sum rule for derivatives?
- Riley
- You know I do.
- Devyn
- What do you think that the “product rule” will be?
- Riley
- Let’s give this a spin:
- Devyn
- Hmmm, let’s give this theory an acid test. Let’s try Now
- Riley
- On the other hand,
- Devyn
- And so,
- Riley
- Wow. Hmmm. It looks like our guess was incorrect.
- Devyn
- I’ve got a feeling that the so-called “product rule” might be a bit tricky.