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You are not logged in. #1 20060125 10:00:18
product rule problem....A electron moving along the x axis has a position given by x = 24 te^2.2 t m, where t is in seconds. How far is the electron from the origin when it momentarily stops? #2 20060125 11:25:35
Re: product rule problem....
Always post all your work. Not only does it make it easier for us, but it shows us exactly where you went wrong.
You need to find out when it stops, aka when velocity is 0. So to find an equation for speed, you need to take the derivative of the distance (location). "In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..." #3 20060125 12:42:41
Re: product rule problem....yeah. bc im supposed to solve for t. #4 20060125 23:57:21
Re: product rule problem....
It doesn't matter. Either way will give you the same answer.
Yes, but you also leave it where it was, so the derivative is 2.2e^2.2t And from there you just have to equate it to 0. Feel free to come back if you're still stuck. Why did the vector cross the road? It wanted to be normal. 