Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#201 Re: Jokes » Sunday School » 2007-01-31 23:33:53

Mr T wrote:

no, really. i don't get it. as a devout catholic i don't feel th@ th@ is the sort of thing eve would say

Hehe, that's the point.

#202 Re: Maths Is Fun - Suggestions and Comments » Real and Imaginary Numbers » 2007-01-31 18:42:36

Hmmm that's pretty cool, good job on those pages smile. Aren't imaginary*real numbers complex, and not imaginary?

#204 Re: Guestbook » hi » 2007-01-30 15:32:48

It would be cool if we got some more smilies!

#205 Re: Guestbook » this is a great site » 2007-01-29 15:06:28

Haha, those patterns actually look very good, I believe this is the most smilies I have ever seen in one post.

#206 Re: Introductions » On completing another orbit » 2007-01-29 09:37:18

Welcome back Rora! I haven't met you before, but I've heard about you smile

Interesting passage there, you seem like a very interesting person. You are have a great style of writing too, it makes me feel nostalgic too, but I don't know why.

#207 Re: Dark Discussions at Cafe Infinity » Dealing with Procrastination » 2007-01-29 08:51:06

Yes, music has indeed helped a lot, it makes things a lot more bearable and interesting.

#208 Re: Help Me ! » Mortgages » 2007-01-29 06:34:18

Ok thanks Pat, it's ok if you don't post one, anyway I'll be starting school tomorrow so I can ask my teacher.

And it's not my favorite topic either hmm

#210 Dark Discussions at Cafe Infinity » Dealing with Procrastination » 2007-01-29 00:07:21

Toast
Replies: 6

Well, school is coming up on the 31st and as usual I wanna try and ace everything (lol), so when I get into the year I try really hard and do all my homework etc...

However, later on in the year (and this can start quite early), I tend to lose focus and instead of doing homework I browse the internet or watch TV. So I always tend to get to work on my projects really late and hence sleep really late. I think the record for the latest I've slept last year was sometime around 4:30 am.
And of course the final result is that my marks have dropped a lot since year 6 (the final no-brainer year), not so much for my exams, but for projects and homework.

How do you deal with procrastination?

I better get to sleep now... sleep

#211 Re: Help Me ! » Constant / Fraction » 2007-01-28 23:02:42

Well,

Now, if you remember back to basic division, to divide you must reciprocate the denominator and multiply it to the numerator:


#212 Re: Help Me ! » Integrating Trig » 2007-01-28 22:36:51

Oh, so you can only use radians when dealing with integrals? o_O I c.

#213 Re: Help Me ! » Integrating Trig » 2007-01-28 16:35:55

Just wondering, but what is the actual use for integrating trigonometry? You can't actually use it to find the area under a graph right, because the domain and range of all trigonometry functions are limited to all Real Numbers.

#214 Re: Maths Is Fun - Suggestions and Comments » Random Words » 2007-01-28 14:56:29

Lol that's really interesting, a lot of them look like the random stories you might find in a spam email XD


Oh, and I spotted some grammar mistakes:

Under the 26^5 (near the top)

Let us be guess that there are 40,000 words in English that have 5 letters

And under 'Try for yourself'

You can try all three mothods here

#215 Re: This is Cool » Multiplication by drawing and mathsisfun.com listed on yahoo! » 2007-01-28 14:47:17

Hmmm... interesting how they keep finding new ways to do these things. It would be too time-consuming to use in my studies, but it is pretty cool nevertheless.

#216 Re: Dark Discussions at Cafe Infinity » whats a real member? » 2007-01-28 05:40:11

I think it's good to be a Real Member just in case you need to use it... but that's just me.

#217 Re: This is Cool » 7ths are kl! » 2007-01-28 02:05:26

George,Y wrote:

On the other hand, infinite decimals are defined by guessing, too. Because we can only work out or deduct finite decimals.

Wow, there isn't a method yet? Could be something we could work on wink

#218 Help Me ! » Integrating Trig » 2007-01-28 01:59:37

Toast
Replies: 6

EDIT: I found the answer and I tried to delete this topic, but it wouldn't delete hmm lol


So I need to integrate this:

So I split up the product:


And simplify:

And integrate:

And simplify:

But the answer says:

I'm pretty certain I made a mistake with integrating cos(0), but I don't know how to fix it.

#219 Re: Help Me ! » 2 equations=parallel lines » 2007-01-28 01:27:49

Yep, the coefficients of x are both -2, so they must be parallel

#220 Re: Help Me ! » Mortgages » 2007-01-28 01:17:37

How did you come up with the formula?

#221 Re: Help Me ! » Mortgages » 2007-01-28 00:06:50

Hmm thanks Patrick, that works

#222 Help Me ! » Mortgages » 2007-01-27 23:41:25

Toast
Replies: 6

A person borrows $10 000 to repay a loan in equal instalments over 20 years. The interest rate is 12% p.a.
What is the repayment amount (to the nearest cent) for annual instalments?

dunno

#223 Re: Guestbook » hi!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! » 2007-01-27 22:25:16

Huh??? But it isn't expected until 2061!

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