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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#1 Re: Dark Discussions at Cafe Infinity » In response... » 2009-05-24 07:16:31

in reply 2 bobbum's question bout de supposed panter round were i live...no 1s really said anythin dont think any1 believes its der...oh nd if my friends r 2 be listened 2 apparently im a leprechaun bn 5 foot and irsh may have its down sides but hey apparently i can grant wishes

#2 Re: Jokes » Limericks » 2009-05-17 06:47:48

dey r relly funny. i specialy like de sheep 1 lol
nd its called Limrick nd its both a county and a city:)

#3 Re: Dark Discussions at Cafe Infinity » In response... » 2009-05-17 01:34:40

i dunnno apparently ders bn sightings of a big black cat near were i live nd ders bn really big claw marks found and loads hav sheep and cows have been killed, i dont no if its true tho.

#4 Coder's Corner » 0(n) » 2009-05-17 01:32:07

LorraineBR
Replies: 1

hey i was just wondering if any1 could give me a formal definition of f(n) is O(n) and what a graph illustrating it mite look like, its a question on a sample exam paper nd theirs no soloution for it

#5 Re: Dark Discussions at Cafe Infinity » In response... » 2009-05-16 01:25:02

cool i think ive found somethin new 2 distract me from my studies. in says on wikipedia dat cryptozoology also covers animals existin outside der natural habitat. would that include de panter thats supposed to be living around my area. or is it mainly interested in creatures such as big foot

#6 Re: Coder's Corner » Best Language to Learn? » 2009-05-16 01:13:07

darn der goes that plan i guess its back to the studying:)

#7 Re: Dark Discussions at Cafe Infinity » In response... » 2009-05-15 09:32:27

this probably wasnt wat you had in mind but what is it

#8 Re: Coder's Corner » Best Language to Learn? » 2009-05-15 07:20:36

hey bobbym...u like pointers...hmmm.howd u feel like a trip to dublin on monday u can do my comp sci exam...and while ur here u cud do my calculus and linear algebra 1s to...wat u say ?????:D

#9 Re: Introductions » Hi » 2009-05-15 05:34:15

hi thavamaran...wat enginnerin are you specialised in

#10 Re: Coder's Corner » Naming Conventions » 2009-05-15 02:18:41

my lecturer always says give it a name that means something because it will be easier to understand when reading over, in functions the first letter in the word should be in lower case but after that to have them startin with an upper case letter e.g getLengthOfArray(). he also believes that member data should start with m_ eg m_Data

#11 Re: Coder's Corner » Best Language to Learn? » 2009-05-15 02:14:16

ive bn learnin c++ 4 de last 2 years (and have an exam in it in 2 days so prob shud get off the internet) but i found that while c++ does teach u alot and stuff it can b over complicated in some parts specially wen it comes to pointers and in those cases java can be better. i also find microsoft visual studios good because their compiler is built in and it is very user friendly specially if your doing more than one file projects

#12 Re: Dark Discussions at Cafe Infinity » Dd » 2009-05-15 01:56:45

eh think ftw means for the win but not entirelly sure wats goin on here so i could be wrong

#13 Help Me ! » vector equation of the line tangent to the graph » 2009-05-15 00:22:13

LorraineBR
Replies: 0

hey im just goin through old tutorials in preperation for my exam and came across this question

Find the vector equation of the line tangent to the graph of r(t) at the point P0(0,−1, 1/4 ) on the curve.

my lecturer gave this soloution

Solution: The point P0(0,−1, 1/4 ) on the curve corresponds to t = 1. We find
r0 = r(1) = −j +1/4k , v0 =dr/dt(1) = i − j +1/2k .

Thus the tangent line equation is
r = r0 + (t − 1) v0 = (t − 1) i − t j +1/2(t −1/2) k .

i get all of it except the bit where he finds v0 and was wondering if some1 could explain it to me

thanx

#14 Re: Introductions » Hi » 2009-05-13 11:00:36

its more helpful wen ur doin it to find roots of eqn its still pretty stupid tho. and your right the maths curriculum has a lot to be answered for i no it has to be thought but it could be thought better

#15 Re: Introductions » Hi » 2009-05-13 10:44:56

oh i thought it was maybe just somethin odd we do coz it really is kinda pointless

#16 Re: Introductions » Hi » 2009-05-13 10:36:35

emmmm
i think it was wen u devided by a number bigger than 12
its for wen your in primary school its really long and stupid
       011
      ____
15√ 165                  15 doesnt go into 1 so u carry it across to the 6 makin 16
       16                    15 goes in to 16 once so 1 goes on the top line and ur left with 1 and u bring down the 5 to make 15
         15                  15 goes into 15 once so you put one on the top line and ders no remainder so eleven is ur answer
           0

#17 Re: Introductions » Hi » 2009-05-13 10:21:43

hi tanx every1. wow 11 i could barely do long devision wen i was 11...in fact i still find it a little confusin hmm ...so i doubt ill b of much help but i like de site i love de jokes and puzzle page der fun big_smile

#19 Re: Introductions » Hi » 2009-05-13 07:18:53

tanx although der not needed so much at home, im irish. r u really only 11??

#21 Re: Jokes » Some interesting facts... » 2009-05-13 07:07:13

#192 The hardness of ice is similar to that of concrete.

#193 Apples are more effective at keeping people awake in the morning than caffeine.

#195 Most lipstick is partailly made of fish scales.

#196 Bats always turn left when exiting a cave.

#197 In England it is against the law to die in the house of parliment

#198 Elephents are the only animal with four knees

#199 In Sweden there is a ski-thru Mcdonalds.

#200 Only about one fifth of the Sahara is sand the rest is made up of rock formations

#22 Re: Jokes » Count The Black Dots » 2009-05-13 06:18:48

im confusedwhat

never mind didnt c de link

#23 Introductions » Hi » 2009-05-13 06:12:19

LorraineBR
Replies: 13

hey im LorraineBR, im at college doin an engineerin degree and i get a maths degree 2 so i thought id join in the hopes of learning something:D...just thought id say hi so hiwave

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