MAA-BIH ORG

Math-section!!!! I draw the attention of young students and opinion of top contributors of math section as to whether there is a need to split the section into 2 parts viz
> mathematics, and
> Applied mathematics

Presently, I think neither the young students are being squarely benefited nor YA able to coordinate affairs of math section properly. There is lot of volume exchange from students and wishful meandering of difficult problems by top contributors. Bulk voting and multiple similar solutions are also problems of concern for young students who get perplexed by TUs/TDs given randomly favorites/foes. Applied math question will engage top contributors interest fully and when free they can help other math section category.

Something similar could be designed for physics section as well.

There are my observations, and you may be having your own set.

Please comment!!
YA staff is invited to opine/clarify
i would even go to the extent of proposing > mathematical physics sub-section
Mr Daftary> it’s not all about TUs/TDs. If your past efforts did go waste with YA then it does not mean that the society will continue to remain curbed as if Hitler continues to rule. We are advancing, and my personal objective is to see something like "mathematical physics" branching out in YA for physics students.

I know logic is absolute, yet for physics, mathematics is only RELATIVE, and benefits cannot be subjected to boundary conditions or limitations of a group/institution (YA).
Scythian1950> Mr Daftary revealed to me that you are too good in math. I respect your knowledge, and will remind myself 10 times before annoying myself to your good self. you views herein are uncompromising to the scale i am asking from.
Try my next quetion please on the same theme, but across boundaries
read above as:

Mind everyone> students are NOT as bad as we top contributors are (not all)!!
read above as:

Mind everyone> students are as bad as we top contributors are (not all)!!
Scythian1950> I have enjoyed most beautful comments from askers in physics, and math as well. But, math is too erratic that too bcause of wrong policies of top contributors!!!
Mind everyone> students are as bad as we top contributors are (not all)!!
write your comments please
Scythian1950> your big brother advice to Rakesh Dubey regarding top contributors is a "sort of red-tape", which speaks volume about a chief warrior trying to square up a JCO (junior commisioned officer).
δoτ > we all agree to the fact that mathematics section is crippled without the facility of text-editor, yet we have devised ways to put across the logical text and equations reasonably well. YA might be having reservations against the editor and its complex symbols that might flood up its system. The problem is not with YA, but with group of sensible people, considering themselves only CONTRIBUTORS – with earned TOP portfolio, who while so intensely competing render the solutions beyond the reach of students. In fact, many math and other questions askers are so sure of multiple voting that they just forget it after asking.
lithiumdeuteride >
The moot point is to keep contributors under a given category, and not the asker’s question. Suppose a TOP-10-contributor (XXX) is busy in applied math then he will have enough suitable material to work with at peace (as Scythian1950 wished) and will not be bothered if question comes therein wrongly, thus lesser mortals (seeking top-10) will contribute to that question. If question is in other math category, then young students will get chance to answer to new askers. I think every asker (so smart these days) is well aware as to where the question should land.
as everyone pointed out that YA is normally under deep SLUMBER on such issues, i take your kind permission to extend the duration of this Qs. Please circulate in your friend circle of members/non-members of YA. Thanks
Thank you Dr D (as also extended to everone else), but the newer ststem will be as true as it seems to you presently. But, a changed mess, whether +vely or -vely, has always brought in progress. Do not worry Scythian1950 could be easily located in an improved mess (applied math) as well.
psbhowmick > very precipitating and honest comments of your goodself. Thanks for stopping and caring herein. Respond to my email to you.

I agree with this opinion that it should be divided with some restrictions in at least three sections 1) Mathematics (day to day life based) 2) Mathematics (academic) 3) Mathematics (applied), but I don’t think that there would be any effect on Y/A system and will take any action about it.

TUs/TDs should be replaced by honest comments (agree with Mr Madhukar.) or if any one gives TU/TD, it should be disclosed. these discussions have been already done but all in vain.

Role of Top contributors here also is not very good (showing off, having multiple profiles, unneccessary comments etc.). Once, I had asked a question and couldn’t select the actual BA, as a result, that answerer got very disappointed (I realised that I made a mistake).I know six - seven top contributors/contributors, who are really highly knowledgeble and I respect them very much and I try to learn from them.

I think that whatever is consistent with right reasoning should be accepted, even though it comes from a boy or even from a parrot; and whatever is inconsistent therewith ought to be rejected, although emanating from an old man or even from the great Mathematician. . .

I wanted to let you know that you inspired me to channel my emotions into art and music. I taught myself how to play some classical music songs on the piano when I was up north. I have also created a painting that is simple in layout and creation, yet masterful at obssessing the eye with beauty. I only wish I had more time to venture where my heart creates what I feel and where my mind engineers without thought. I have this overwhelming feeling of debt for the love that you gave and a heart that always has you in unspoken prayers. How is life treating you and has your innocence truly been lost as you once told me I had taken? I hope that you will forever, love as though you never lost and smile every time the sun lights up the life in your eyes. It is very difficult living with a past that may be forgotten but never void. I hope that you are as strong as ever and never disillusioned by the world. Albert Einstein, famous for nothing other than Mathematics, once said, that, " Great spirits have often encountered violent oppositions from mediocre minds." Greatness is immediately recognized and often feared as it is the beholder that will often go where the masses desire. It is ofcourse, simple mathematics, to know that the masses cannot ascend to that desired level. Any possessing the natural abilities and learned qualities that are the like of Einstein, Monet and Warhol, are ostricized and criticized for their talents. Never recognized until what they have done cannot be ignored. Often, as history demonstrates, after they have lived a life of, "fiascos," but never ceasing in their passion and ultimately succeeding in what they were born to do. I hope that you have not lost what separates you from the masses. I remember a passion and drive in you that was effortless, yet intimidating by the level of incomprehension understood by others. I hope that you retain that quality through all that life offers in your direction. I am finding it extremely difficult living with the failed promises of a world that is nothing like the values taught to every child from the moment they were born. A world that offers nothing but politics and flaws that can, should but will never be in align with the atmosphere I was told existed. A world in which problems are deferred, not corrected. One where I must comply although I know that it is wrong on so many different levels. A world where failure to comply or an objection to wrong results in the demise of others. I just don’t understand or maybe fail to see the reason behind those with the power to change tradgedies. I have been focusing on what I can do and I proud to tell you that I have a 4.83 Customer Service Index Rating, (highest in the entire 4 state company locations and a %66.6 rate of performance guarantees. I sold a 90 year old woman a range the other day and she said to me before purchasing the guarantee, "I’m 90 years old! Five years is a long time! What would you do?" as she looked at me for more than a response to the topic of a 5 year warrantee, essentially. I said, "I’d be optimistic. I don’t want to die and the simplicities of life sometimes cost a little more. I do know, that, at 90 years old, knowing that for 5 years you will never have to buy a new range is worth far more than the cost of the performance guarantee." Needless to say, she bought it. Why? Cause it was the truth and something I learned from you. Simplicity is worth more than any amount of money that one could ever have. I always remember you saying that and could never appreciate it back in a time where chaos ruled my world. Honesty, however damaging, is the only solace on the journey of life. Lies and deception only waste the limited amount of time we have and will never result in a solution. So much to say, which I offer only as knowledge from my irreversible mistakes. I owe you so much more but know of nothing to give that would ever replace what I feel I have taken. I do not expect a response and understand if you never want to hear from me. Just tell me and I will understand that to mean you have found a glimmer of forgiveness and I may begin to engineer the relief of guilt that burdens me. I am forever indebted for the love you gave and the friendship that I abused and so carelessly neglected.
I have missed you everyday since you removed yourself from my life.

it will get to him/ her if it was from your hart my friend.

let me tell you this before you despair from my computer screen

you have inspire me to tell the I love that I love them all.

take it easy that is life we talking about you have some of it and the resat of the people have some of it.

I am planning to study management, and am about to attend an International Baccalaureate Diploma programme at my high school. My problem is that the majority of universities request you to take High Level Mathematics, and at the same time have at least a grade 6 at it. I took SL maths, since my teacher told me HL is very demanding and abstract, so now I am in a quite big dilemma. Can anybody tell me how difficult it is and what is studied, and how I could achieve a very good grade? Thanks!

I do HL Maths!! but i am in year 11, my school starts it in year 11 because it has so much in it.
Year 12 is meant to be much harder and hard to get 7’s. I am okay and will do it next year.
Its fast pace though but manageable i am not struggling anyway.
Well i don’t know what country you are from, but its like the non international version that (presumably) your school offers and a little bit more. Its meant to be first year uni equivalent. It’s strange your uni’s require it though, in Australia we only need either a 5 in HL or 6 in STandard. However if you are very good at Maths give it a go, you can always move down can’t you?

Well in the past semester and half a term we have done Coordinate Geometry, Quadratic Functions (revision), Quad Inequations, Circular Functions including reciprocal functions, Binomial Expansion, Sequences and Series, Sigma notation, Polynomials, Graphs of polynomials, Functions (including composite and hybrid), Inverse Functions, Exponential Functions, Logarithms and we are doing Rates of Change now.

I think give it a go, too difficult drop down.

I don’t mind Maths though and keep in mind it means that you will have to go to a lot of Maths classes keep in mind what you enjoy. I am like through 50 pages of summary notes, if that gives an idea.

it will be harder in yr 12 or your final year.

Only suggest you study heaps! make sure you understand EVERYTHING, unsure the first thing you do is ask your teacher no dilly dallying what so ever. Understand fully and practice and its possible

Blue eyes

Yesterday I met a colleague of mine. I know he has three sons and I asked him their age.

He answered: “The product of their ages makes 36”.
I thought: “These mathematicians are crazy!”. Then I said: “That’s simply not enough! How can I
tell their age? Tell me something more”.

He said: “You smart guy! Well, the sum of their ages makes the number of windows you can see in
that house over there”.
I thought: “These mathematicians are really crazy!”. Then I counted the windows, I thought five
minutes and said: “I cannot tell their age! Tell me something more”.

He laughed at me and said: “You are really a smart guy! Well, my eldest son has got blue eyes”.
Then I said: “I got it!” and I gave him the correct answer.

Well, what is the correct answer?

Hints
First of all, it’s not a joke; it’s a serious problem. There is no advanced mathematics involved.
However, in my opinion it’s a rather difficult problem; but the solution is nice!

One more thing: sometimes the information is not where you think it is; that’s exactly what this
problem is about. And another thing: don’t ask, I will not tell you how many those windows were…

Here are the integers that, when multiplied together, equal 36:

1, 1, 36 (sum = 38)
1, 2, 18 (21)
1, 3, 12 (16)
1, 4, 9 (14)
1, 6, 6 (13)

2, 2, 9 (13)
2, 3, 6 (11)

3, 3, 4 (10)

If the sum were anything other than 13, the solution would be apparent from the "number of windows" clue. So the sons are either 1, 6 and 6 … or … 2, 2 and 9.

The "eldest son" reference (whether it be regarding blue eyes, soccer yesterday, whatever) implies that one is distinctly older that the other two.

The answer you probably want is 2, 2 and 9 … but doesn’t take into account the possibility that one twin might be two minutes older (say) than the other. (Only in the rarest circumstances would twins come into the world simultaneously! Was this male mathematician at his sons’ births? ~lol~ )

Therefore 1, 6, and 6 *isn’t* eliminated from the options.

Case unsolved … or have I missed something?

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is there a deeper issue (problem) than curiosity? For example, I have a friend that is a nursing student. He also is proficient at calligraphy, painting, can play instruments (2), was previously good at mathematics and checks out math books to keep up with his past performances. Philosophy is another thing he does. I really wonder what drives him? He is a loner and doesn’t want friends, just knowledge satisfies. It’s difficult to understand what is the reason for wanting to know everything and I wonder why he doesn’t try to stick with one thing and excel.
When I asked him about it, he replied that he "would die" if he couldn’t do philosophy or engage in his interests. Nursing was just a way to "make money".

He sounds like an enneagram type 5
I can relate.
It’s not a "complex" but an investigator type.
If you google "enneagram type 5" a lot of info will come up.

Hi there

Im finding it difficult to solve differential problems. like the one shown below. I can differentiate single equations.

Q1

For the curve V = sint - cost ( 0 ≤ t ≤ 2 )

(a) Find the V - intercept
(b) Find the t - intercept
(c) Find the turning points and their natures
(d) Sketch the curve

Thanks Again

Richard

(a) set t = 0, plug it in the equation, and find V
(b) set V = 0 plug it in the equation and find t

(c) dV/dt = cost + sint (i think u mean that t is between 0 and 2 pi)

set it equal to 0 to find turning points

cost + sint = 0

t = 135(0.75pi), 315(1.75pi), 495(2.75pi), 675(3.75pi)

for each of the values of t, find v and u have ur turning points

nature of turning points:

d2V/dt2 = -sint + cost

plug in the t’s u found for the turning points in this equation if the answer is:

+ve: minimum point
-ve: maximum point
0: needs more investigation (i forgot how to continue for this one)

(d) put the turning points on the graph: the graph goes up on either side of min points and down on either side of the max point..

With mathematics having expanded so rapidly in the last century, there are so many fields, theories that’s it might be difficult for mathematicians to evaluate them. Take the proof given by Andrew Wiles for Fermat’s problem. Initially there were some mistakes in it, but they were spotted and eventually corrected.

Is it possible that incorrect proofs sneak in?

"Sooner or later most theorems break down and need adjustment. Assume that you have gotten a new insight on a mystery and that with more work that is never ending, you will find out more and more."

I think this answerer is confusing "theorem" with "theory". It is theoretically possible that incorrect proofs sneak in, but mathematicians are very strict and it is therefore highly unlikely that a peer review would not spot a mistake. A theorem is something proved in a mathematical sense. Once it’s proved, it’s proved and does not need adjustment.

I’m for a math project about how students experiencing difficulties in Mathematics. Can the educational environment has a problem with it? Or is it the facility has something missing for studnets? Is there a problem within the classroom? Is there any reason how students became difficult to study Math?

If you are suggesting that a student suffers when the learning environment is not conducive to learning, then absolutely, you are correct. Math is difficult for many students. There seems to be a love or hate relationship with it. Those who love it, do well, and those who hate it either don’t do well, or they respect it and try to do as well as they can. I am all for projects if they contribute to the understanding of the class, whether it is math or some other subject.

A king had three sons. After his death, the land and elephants were to be divided as under:
First son = 1/2 share of whole property and elephants
Second son - 1/3rd share
Third son = 1/9th share
The land was divided. But the elephants were 17 in number
which were difficult to be divided among them as per share.
An elephant rider with his elephant passed by. He was told about the problem. He sacrificed and added his own elephant, making the total of 18 elephants. Now division was easy. First son got 1/2 of 18 = 9
Second son got 1/3 of 18 = 6
Third son got 1/9 of 18 = 2
This total was 9+6+2 = 17
The 18th elephant became spare.
The elephant rider took it, rode on it and went away
question is that if rider did’nt come, they were to cut elephants and First son was to get 1/2 of 17 less than 9
Second son 1/3 of 17 less than 6 The third less than 2
but they got full 9 , 6 and 2 by addition of the riders elephant
yet the riders elephant became spare. Is your mathematics ok?

1/2 of 17 = 8.50 = 9
1/3 of 17 = 5.67 = 6
1/9 of 17 = 1.90 = 2

9 + 6 + 2 = 17

Yes, my mathematics are fine. No spare is needed, just use rounding.

My wife and I are planning to work part time so that we can take care of our children without using child care. Our background is very scientific (mathematics,biology,physics, etc); we were planning to have a small child care (probably for kids between 5 to 10 years old) in our house that promotes science discovery and appreciation. For example, we would apply the math they learn in school to real problems and explain how more difficult mathematics is used today. But we are not sure how much parents would pay and if they would even be interested.
"Jobs are being lost. People are having a difficult time feeding the family."
That is why parents should invest in kids education.

"I don’t think they would pay much for a babysitter."
I was not talking about a babysitter.

"There is a program that offers something similar…"
Yes, that is what I was talking about.

There is a program that offers something similar, though it comes to you, and isn’t actually a baby sitting service.

Their pricing might help you figure out what you should charge, though.

www.MadScience.com

It would be a very good idea to check with the Better Business Bureau in your area to find out about the average price for local daycare services.