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  1. M

    Ice Cream and evolution.

    Oh hello This's just strange. We did a small project "Making ice-cream" You know, put milk and sugar and vanilla into a zimploc, place the pack into a bigger one stuffed with ice and salt. We've luckily gone through the questions he asked. But the last question just doesn't make sense to me...
  2. M

    Related to Emf

    Please be patient, I'm sure somebody will help you. :)
  3. M

    Absolute equation problems.

    Okay, thanks Dextercioby. Viet dao, you meant that I compute incorrectly? Hmmm let me do it again. Or, we can 'break out' the absolute by devide into two situation: x-1 >= 0 or x-1 <0 it's long, but not so confusing.
  4. M

    Absolute equation problems.

    Why? So, is my solution wrong? Thanks
  5. M

    Absolute equation problems.

    Hello, Well, I have the equation: x^2-2x-m|x-1|+m^2=0 (1) They ask me what m is so that the equation has solution(s) Well, I let t=|1+x| and solve the problem with t (no more x) and I have the last equation: t^2-mt+m^2-1=0 (2) in order that (1) has solution(s), (2) must have solution(s) t...
  6. M

    Basic Chemistry problem

    Ah, by the way, We have: If \Delta =0, the subtance is not 'full' so; it has no \pi_{cc} linkage, no 'cycle. If \Delta =1, the subtance has 1 \pi_{cc} linkage OR 1 'cycle' If \Delta =2, the subtace has 2 \pi_{cc} linkages OR 1 \pi_{cc} linkage + 1 'cycle' OR 2 'cycles' So, what is this...
  7. M

    Basic Chemistry problem

    Well, hello! I was informed a new formula. As a non-native, I can't give out the definitons, I hope that you can help me call some. Well, here is the formula: \Delta=\frac{2+\Sigma n_i (V_i-2)}{2} Well, as far as I can say, \Delta here is equal to the total of the linkage C=C+ number of...
  8. M

    Need help on Ohm's Law

    Well, okay, Thanks! Thanks for all of your time and help!
  9. M

    Need help on Ohm's Law

    Excuse me, still, I don't know what for? Please explain for me. Thanks! btw, if we figure the another way, as thru R3 and R4, is it the same? Thanks
  10. M

    Need help on Ohm's Law

    Oh thanks, I got it, it's U_{MN}=4V Thanks alot!
  11. M

    Need help on Ohm's Law

    Ohh, sorry, I'm so clumsy, I didn't mean to draw a straight line connecting M and N, there was nothing connecting them at all. yes, they meant to cross the resistances. And that's helped. Thanks! BTW, I got difficulty when I need to go down for the next line, what's the syntax in LaTex for...
  12. M

    Need help on Ohm's Law

    Well, I'm quite idle in Lunar New year's holidays so I decide to do some exercises on Physics, I got stuck when solving the problem, then I tried with the suggestion on my text book, but still, I don't understand the problem, please help me out! btw, sorry, something has gotten on LaTex or I'm...
  13. M

    Some special consequences from the limits of e: need a little help

    Hmm... yeah, the basic consequence \lim_{x\rightarrow0}\frac{ln(1+u)}{u}=1
  14. M

    Some special consequences from the limits of e: need a little help

    Uhmm... alright! Just imagine that sinx = \alpha Then the thing above is equal to: \lim_{x\rightarrow0}\frac{ln(1+\alpha)}{\alpha} (*) Then, this limit is a consequence limit of e: \lim_{x\rightarrow\infty}(1+\frac{1}{x})^x = e So. (*) =1
  15. M

    Some special consequences from the limits of e: need a little help

    Hmmm... So far, I've done it. But I think tis way is better: \lim_{x\rightarrow0} \frac{ln(1+sinx)}{x} =\lim_{x\rightarrow0} \frac{ln(1+sinx)}{sinx} . \frac{sinx}{x} =1.1 = 1 Is it right?
  16. M

    Some special consequences from the limits of e: need a little help

    Okay, thanks! PS: Thanks for telling me about LaTex! It's cool! I'm learning it!
  17. M

    Some special consequences from the limits of e: need a little help

    Well, I got it as lim (x->0) of [(1+sinx)^(1/x)]
  18. M

    Some special consequences from the limits of e: need a little help

    Why e^{L}=\lim_{x\rightarrow 0}(1+\sin x)^{\frac{1}{x}} ?
  19. M

    Some special consequences from the limits of e: need a little help

    Sorry, misters, but I got stuck while finding the lim of e^y.
  20. M

    Some special consequences from the limits of e: need a little help

    Ok, I got it! I was so stupid! Thanks, Mr. Hallsofivy, thanks Mr. Dextercoby
  21. M

    Some special consequences from the limits of e: need a little help

    No I haven't learnt about it yet. Any other way?
  22. M

    Some special consequences from the limits of e: need a little help

    Well, hello! I have difficuties solving a problem. Well, the first 3 ones are done successfully: a. Calculate out the lim (x -> inf) of (1+2/x)^x But assuming that 2/x = 2/t, I got the result to be e^2 b. Do the same thing with the lim (x ->0) of (1+3x)^(1/x) Well, yeah "do the same...
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