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EDIT: I did the exam already so I don't need the answer anymore. They didn't ask it in the exam luckily :DDD I have the final exam of maths tomorrow. (high school) A question: How to count the radius when using integration to count volume? The formula is like: pi * (the integral of r^2 from...

Thank you. Awesome! The logic works now. Just didn't understand I had to factorize with the zero-points (in English??) method. I still got to think how to proof them that n(n-1)(n-2) is divisible by 3 but I think it will be an easier task, I'll ask if I have to. Thanks.

QUESTION: Show that number n^3 - 3n^2 + 2n is divisible by 3. n is integer. I can't solve it. I tried sth like: the polynome = 3x, x is integer. But not sure how to show what I need by that... help?

Thanks, I did not read this in time and kinda failed the test but at least I know how to do it now ^_^

A football player scores when performing a penalty kick with the probability of 80% (0.8). How many times he has to try until he will get a goal with probability of 99% (0.99) or more? Answer: I don't get it... I tried to use log but that went wrong. It just doesn't work to power 0.8 (like...

Hey, thanks a lot for your time and effort :) The calculation worked when I removed the D of the inner function (the one that was not needed). The answer happened to be the same when I did it the wrong way or the right way so that is why I was so confused. Cheers! :cheers:

Thanks a lot. Now I will try the calculation again using those tips. I got the main points but your writing is quite... special :D . I understand now that it was all good exept that I added the ' of inner function when it was not needed. I will post you back here when I have tried that...

Thanks for the help. I don't know why the counting goes right if I do the wrong thing (this is just a part of one big counting though). Maybe we'll find out in a few hours ;) However, I am quite sure that tan(x) can be also derivated to 1+tan(x)^2 . I have used it successfully in other...

Okay, this is true. I think I remember the multiplication rule now somehow but the first part of the calculation is to derivate x which is 1 and then it is 1 times the tan part. So basicly in the first operation we didn't have to derivate the tan part but the counting goes right if I put the D...

Alright, thanks. So the thing is that you have to count "D" for the outer function and then you count that times the "D" of the inner function. But the weird thing in my counting was that why do we need to count the "D" of inner function even though we didn't have to count it for the outer...

You mean converting tan2x to sin2x/cos2x ? That might work but it feels kinda tricky...

Are you prepared for another one? Let's say f(x) = x tan2x . Then we count f'(x). I think it is called derivation in English. So the counting goes right when I do this: tan2x * 2 + x(1+tan2x^2) * 2 But that seems weird. I forgot why did I put the first * 2 and I don't know why the last * 2...

A short question. Can you divide by cos (or sin) in an equation? I'm just worried if it is zero and then it would be wrong. Do I have to test it afterwards in case it was 0? Thanks. I hope the question makes sense. EDIT: I meant "cos x" or "sin x" ofc..

Please help! I want to sell my old laptop so I reinstalled Windows. Now the stupid moron pc's screen looks like a mess as it is the wrong resolution. It should be at 1300xsometing but the highest option in the place where you should be able to change it is like 1xx0..something. The color...

Hehehe :lol:!!! Hahaha :lol:!!! Currently 44% of people think that either kossin or Born in Cantaloupe or Duckweed is the best Civ IV player. Don't get me wrong, I have nothing against these guys and I know that they are really top tier players but I just find the numbers kinda funny :) I don't...

Thanks. Maybe I'll take a look at one of those open source things or then just keep on playing with javascript.

Thank you sir! I still don't quite get it. How do these people make mods to games then?

Hi! I was wondering if there is any way to take a look at the actual codes of my pc games. I mean I'm interested in programming so I'd like to know how to do this to learn by looking how the real programmers do these games. I understand that the game puts my save files and my personal settings...

Hi! The school season has ended now so I could post the map when you want to try it out. I played the map once, I lost the game but even though it's not completely balanced and it's difficult I guess that there is a simple strategy to make it easier. Justinian on Pangaea mapscript. Just tell...

I have lots of school work right now so I'd be happy to post the game after this season. That means like in June maybe. Sorry if this messed up the plans..