Recent content by Benighted

@gneill: I did, now I remember having once attended some sort of lesson on it. Here's an updated labeled image of the same circuit: In that case, the voltage U is divided at point A between R1 and R2 (R+ΔR), and at point B between R3 and R4. Is that correct? In the Wikipedia page, there's an...

Hmm. Potential divider. This means a node in the circuit? I think I see four: top, bottom, left, right. Let's call these points A, B, C, D. So, between points A and C, the voltage on the top left resistor is: V1=VA-VC and between A and D, V2=VA-VD

So, I'm asked to demonstrate the formulas for finding out the voltage labeled here as ΔU, which I'm given in my project document: I think I would be able to make the demonstrations without any outside help, if only I knew how I'm supposed to interpret this circuit branch in the middle. Is it...

The first line of this argument has been quite obvious to me from the beginning... yet somehow I never made the jump to the eventual conclusion. Now it all makes sense. Thanks a lot!

I've used that formula, and another one; the result is a rather pretty numerator of n... over a rather ugly denominator of sums of products of roots of n's and 2n's. I don't know what to do with it. I've checked with very large numbers and a graphing calculator and saw that the function is...

Nope, I'm afraid not. My best guess is ## \sqrt[4] {n} ## as ##n## approaches infinity, but that's not a valid answer, is it?

Homework Statement Find the limit of the following sequence: Homework Equations \lim_{n \rightarrow + \infty} \sqrt[4] {2n + 1} - \sqrt[4] {n + 1} The Attempt at a Solution I've tried multiplying the first radical by ## \frac{ \sqrt[4] {2n - 1} } { \sqrt[4] {2n - 1} } ## to make the radical...

At my university there is an optional course (in pedagogy & education psychology) available that lasts throughout our 4-year undergrad program, that will eventually enable us to teach math, science and related disciplines to middle school & junior high students. (Completion of graduate studies...

Hello everyone, I am an undergrad in biomedical engineering with a longtime passion for the hard sciences (and human knowledge of all kinds). Most of the math and physics I know has been self-taught, seeing as the formal education I've received so far has proved... unsatisfactory, despite...