Mathematics

Mobile phone operator zim" in my country is saying it has more than four million clients. If a phone number is 9 digits long and always starts with a 6... How is this possible?

I have to do a presentation on a math article for a senior topics class in a couple weeks and i was wondering if anyone had a good article on hyperbolic space that has a proof in it that is fairly graspable. Or if anyone has any interesting article so long as it has a proof in it and is not super long. Thanks guys Nathan

Im having difficulty cancelling down the following; (n+(W-1) * n+(Gw*(L-1))) – (n* n+(GW *(L-1))+(W-1)) anybody got any ideas?

consider the set : A = {(x,y) ε (N × N) | x <y , 2x^2 - 5xy + 2y^2 - x - y - 1 = 11} The problem is to determine number of A's members. I have found x=2, y=6 as an answer. But I haven't been able to prove it's uniqueness and I'm not even sure about that. Because my solution is not complete, I don't bring it here. Can anyone help me on this?

mathematicians here might find it amusing , taken from bash.org "Impure Mathematics ------ ----------- To prove once and for all that math can be fun, we present: Wherein it is related how that paragon of womanly virtue, young Polly Nomial (our heroine) is accosted by that notorious villain Curly Pi, and factored (oh horror!!!) Once upon a time (1/t) pretty little Polly Nomial was strolling across a field of vectors when she came to the boundary of a singularly large matrix. Now Polly was convergent, and her mother had made it an absolute condition that she must never enter such an array without her brackets on. Polly, however, who had changed her…

If ex - fy= gx + hy find ratio of x to y Answer is highly appreciated.

How do you solve problems like f=ma? For each variable, you put in a different number, but they are described in different units, like pounds, or pounds per square inch. How does it work?

I need mathematicians to tell me whether the quotation below makes any sense mathematics-wise; and please explain to me in man-in-the street-language what the author is saying. Thanks for any help from anyone skilled in mathematics. yrreg

Find a 2x2 matrix A and a vector v in R2 such that the transforma- tion x --> Ax + v maps the triangle with vertices (1, 1); (2, -1); (3, 4) into the triangle with vertices (0, 0); (1, 0); (0, 1). How many different pairs (A, v) will do the job?

Hello, can someoneu help me with Integration of function f(x) = sqrt(ln(x)) or (ln(x))^(1/2) ...

Just watching on the way home today, I was wondering there must be some underlying mathematics to traffic patterns, Probability of Jams etc?

Hello, Can anyone please provide website(s) for challenging problems that are related to gr.12 curriculum. Thanks

y=(-x^2+1)^1/2 How do i integrate this guy from 0 to 1? since the x^2 has a negative constant, would you need to integrate i? like this [ix^3/3+x] OneStone

Hi! Can someone please explain to me how to integrate: ln4x+cos4x+3. I don't know how to integrate ln4x. Please show me the steps, and explain what integration by part means and how to use it. I have tried to look on it but I am still not clear. Thanks

Hi everybody! As it seems to me I have found quite simple way to prove the "Four Colour Theorem". I am not a mathematician so I can't bear any illusions about my paper but I hope you can find it containing something interesting. You can see it at http://www.geocities.com/itutber. Your comment would be very welcomed Best wishes Ilia Tutberidze

Is there a particular solution to this equation: N=p^2/q^2, where N is any prime number and p and q are two intergers.

I have already made a post for this, but that was in early October, and would be hard to find in all of the more recent posts. I wanted to know what the uses of the mathematical constants [math]\pi[/math], [math]e[/math], [math]y[/math], and [math]\phi[/math] are for, and what there uses are. For example, I know that [math]C=\pi r2[/math], and that [math]A= \pi r^2[/math], and that [math]\pi[/math] is aproximatly equal to [math]3.1415[/math]. So, I guess I understand [math]\pi[/math] pretty well. But I have no idea about [math]y[/math] [math]e[/math] or [math]\phi[/math].

ax^2+b^x+c is the standard function of a quadratic. If i know that a quadratic with this format passes though points A(-3,-2) and B(2,3). How would i go about working out a, b and c? This's got me stumped. Thanks

i'm trying to work out the area between 1/x^4-x^4 and x^2 and the x axis and the y axis 1/x^4-x^4 and x^2 can you give me a hand please? i've integrated between 0 and 0.9 but it gives me a negative area. :S what am i doing wrong? eventually i wanted to work out the area between -x^2 and the quartic. -x^2 aren't these curves beautiful

I'm having a problem in this please i would really appreciate if someone can solve this for me with the formula and everything 1- Find the whole number such that four times the number subtracted from three times the square of the number makes 15.

Cantor's second diagonal method is not from N to R because each element in the list is only a non-accurate representation of R member. Please open: http://www.geocities.com/complementarytheory/NEXT.pdf Thank you.

how do i solve this guy? thanks

When does 1 and 1 make 3? Happy New Year

Everytime I see number 8, this number reminds me of sign infinity. I wonder among all the numbers exists in world, why was the number 8 created as shape of infinity. Maybe there is no reason but this seems interesting.

Let us say that your own life depends on your ability to explain the Bijection concept to a 5 years old child. Please write your explanation. Thank you.