- #1
authgeek
- 7
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I'm looking at this problem below:
http://apthtml.com/images/deriv.png
The first part I understand - a derivative of some vectors, not a big deal - but the second part is where I'm confused. I can't even come up with a name for it. First I thought magnitude, but I don't really see how that works. My calculus is a little rusty, so bear with me while I ask this question. What is it? How did we get from equation #2 to #3?
Thanks
http://apthtml.com/images/deriv.png
The first part I understand - a derivative of some vectors, not a big deal - but the second part is where I'm confused. I can't even come up with a name for it. First I thought magnitude, but I don't really see how that works. My calculus is a little rusty, so bear with me while I ask this question. What is it? How did we get from equation #2 to #3?
Thanks
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