- #1

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Lecture notes say infinitesimal change in V = dV

And large change in V is delta V.. I dont understand what it means though

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- Thread starter Dars
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- #1

- 13

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Lecture notes say infinitesimal change in V = dV

And large change in V is delta V.. I dont understand what it means though

- #2

chemisttree

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Infitesimal change is something like.... change in volume = 0.0000000001L

large change is something like... change in volume = .5L

http://en.wikipedia.org/wiki/Infinitesimal" [Broken]

large change is something like... change in volume = .5L

http://en.wikipedia.org/wiki/Infinitesimal" [Broken]

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- #3

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- #4

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I think this is more of a mathematical question, try and ask the question on the math board (calculus section).

It's like when you try and deduce the average speed of a car, when you know it travelled 10m in 2s, the average speed during those 2 seconds is 5m/s, and that's delta(x)/delta(t). If you want to know the exact speed at one particular moment in time, you need the function of x(t) and derive it, being dx/dt, so the infinitesimal change in position divided by the infinitesimal change in time.

It's like when you try and deduce the average speed of a car, when you know it travelled 10m in 2s, the average speed during those 2 seconds is 5m/s, and that's delta(x)/delta(t). If you want to know the exact speed at one particular moment in time, you need the function of x(t) and derive it, being dx/dt, so the infinitesimal change in position divided by the infinitesimal change in time.

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