The Homework Help Thread

[dinnerroll]

I thought this would be a pretty good idea. Should it be in Critical Thinking? Anyway. If you need help on homework post it here and maybe someone will try and help. I'm not saying it will be me though. Tell me if this should be in critical thinking.

[tnyhwk900]

RE: The Homework Help Thread

No, not a good idea. Most people, if they need help with their home work, are going to make a thread about it in Critical Thinking.

Besides, there isn't many people that will check up on a homework thread to see if there's any homework they can do for someone else. =/

[hEaLiNgViSiOnAnGeLicMiX]

RE: The Homework Help Thread

Not that great of an idea... it wouldn't work out. I mean, the only people here with reasonably 'hard' homework are those either finishing highschool, or university students. There's only a good handful of people like that here. A bunch of 13 yearolds won't be of much help to them.

[lightdarkness]

RE: The Homework Help Thread

I think it's a good idea, however, there is a downside.

Some people would give false answers, just to be funny, or post stupid questions, just to take up peoples time.

[Tasselfoot]

RE: The Homework Help Thread

HVAM... its more the opposite. i know if i posted my questions here, MAYBE 1 person would have any clue about it... so it'd be pointless... but at the same time, i'm very able to help the 13-18 year olds who have questions, as i've had all of that before. except CS... ask LD for that.

not that i really want to. i had my time of algebra and biology... y'all gotta go through it too. and if you think your math is hard: find the integration from -Pi/6 to 2Pi/3 of (sin^2(x))/(sqrt(16-x^4)) that would be a standard problem (i think its solvable, i pulled it out of my head, not a book)

[Afrobean]

RE: The Homework Help Thread

I think this is a good idea. I'm having quite some trouble with my crazy fractions in my precalc class.

This problem was giving me quite some trouble. I am supposed to simplify it.


I got this as an answer:
EDIT: I made a mistake. The numerator should read:"bc+ac-ab"
Is this right? I ask, because it doesn't look simpler to me...

[Tasselfoot]

RE: The Homework Help Thread

you cross multiply. so... the base is right, abc. then you have to figure out what you have to multiply top and bottom by to make each fraction have a base of abc... yet keeping it the same. so for 1/a, you multiply by bc/bc to get bc/abc + ac/abc - ab/abc = bc+ac-ab/abc

and its only simplified because they all have a common denominator now, which means you can add them. you can't add 1/3 + 1/5 without manipulating them in the above fashion....

now if you know the least common denominator, you can use that instead of abc. abc is just always a common denominator, not always the LCD.

[Afrobean]

RE: The Homework Help Thread

Well, a, b, and c are all variables. You can't know for sure what the lowest common denominator is.

PS I made a mistake in my answer. The numerator should read:"bc+ac-ab"

[Tasselfoot]

RE: The Homework Help Thread

i know bean... read my post... its correct in my post. and when i'm talking about LCD, i'm refering to actual problems, not just the general formula.

[dinnerroll]

Re: RE: The Homework Help Thread

I think it's a good idea, however, there is a downside.

Some people would give false answers, just to be funny, or post stupid questions, just to take up peoples time.

I thought about that. The person that needed help should have a basic idea of how to do the work so they should know if the answer is totally off. Or they might ask for someone to verify that it is the correct answer but yeah that is a downside. Too bad some people have to be like that.

I need help with something too. I'm in GATE(most of you know what that is right? Gited And Talented Education) and I'm in th highest math class but I suck at problems like this so here it is. (I'm in 8th grade.)

Jack is married to Jill. Their son Junior asked each of them to reveal their ages. Junior's parents decided to tall him but in the form of a puzzle. Jack told Junior,"If you reverse the digits in my age you get your mother's age. Jill told her son,"The sum of my age and your dad's age is equal to 11 times the difference in our ages.

"Wait a minute." said Junior,"I can't figure out your ages with just those two clues!"
"You're right." said Jack. "Remember that I am older than your mother."

What are the ages of Jack and Jill?

[Brainmaster07]

Looks good to me bean.

(I'm taking pre-cal in school aswell and calc online just fyi)

[Mwerp]

Are you joking

[Tasselfoot]

um... dinnerroll... its 54 and 45... i don't feel like going into the math, cause i didn't have to do it to figure this out... just remember the principles of multiples of 9. they all add to 99, and the difference of 54-45 = 9. 9 x 11 = 99. just came to me as soon as i read the problem... plus, logically... it can't be some big differnce in age. any difference above 9 will mean their ages have to be over 100 total. which a) doesn't make sense for having a young child and b) means in most cases they'll be over 100 years old each, also not good for following the context of the problem.

anyway... thats the answer. sometimes logic is easier to use than mathematics. heh.

[dinnerroll]

um... dinnerroll... its 54 and 45... i don't feel like going into the math, cause i didn't have to do it to figure this out... just remember the principles of multiples of 9. they all add to 99, and the difference of 54-45 = 9. 9 x 11 = 99. just came to me as soon as i read the problem... plus, logically... it can't be some big differnce in age. any difference above 9 will mean their ages have to be over 100 total. which a) doesn't make sense for having a young child and b) means in most cases they'll be over 100 years old each, also not good for following the context of the problem.

anyway... thats the answer. sometimes logic is easier to use than mathematics. heh.

Logic problems are my mortal enemy. Thank you. I needed that by tommorrow. I'll just do the write up and stuff later. That's the easy part. Once again thank you. This thread seems like a pretty good idea.

[dinnerroll]

I am in GATE and the highest algebra class. I am far from retarded. I just SUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUK at logic problems