Mathematics

Can someone tell me what the percentage of 1,648,195 km2 out of 148,647,000 square kilometres Thanks

I am a computer science student, interested in theoretical computer sciences ... I have improved myself in Algorithms, and had a basic course in Discrete Mathematics, My main interest lies in Mathematical Logic, and my question is What do I need to get in order to improve myself in Mathematical Logic ..?

Hi guys! It has been a while since I last posted and I've come with a problem. I know the formula for calculating the future value of a value with compound interest is: [latex]PV = \frac{FV}{\left( 1 + i \right)^n}[/latex] However. I need to figure out how much interest you'd need in order to reach a specific amount of interest per day. For example. I'd need to know how much money I'd need at, say, 7% interest rate per yet in order to get £10 a day interest. I've been unable to figure this out so any help here would be appreciated. This has been giving me a bit of a headache - it's for an excel project I'm working on.

Hey all, I've recently been attempting to use an animated 3D plot generated in Mathematica to model the interference of two waves. Since I couldn't think of a different way to do this, I used a parametric plot with the [math]x[/math] and [math]y[/math] coordinates equal to those on a circle: [math]x = c \cdot \cos(t)[/math] [math]y = c \cdot \sin(t)[/math] As for the z coordinate, I make the z-coordinate in point [math]P[/math] of each wave separately equal to [math]\cos(|PS|)[/math], where [math]S[/math] is the source of the wave. This means that at every point P the z-coordinate of the resulting interference pattern should be equal to [math]\cos(|PS|) + \co…

Say you had a substance, let's say feces and it took up most of a big country of the globe but if you took a small peice of every feces you had and put it on each road on the planet and it covered it seems like it could happen but i dont know why because if the substance is smaller than the country, how could it expand to every road on the planet?

(Other than the exponent.) Anyone?

Hi! Could anyone please explain me how to represent a negative binary number (like -1.11) as a 32-bit floating point number? Really appreciate an explanation with a little example. Thanks for any help.

How come if I make a square 1 metre big and put an object that takes up 2% of the square it would still fit in the square whether it was spread out then made into just length or width but if I put an object that took 99.9% of the square then made it into just length or width it would defeat the square It's like mystic in percentage or something Don't know?

Want I to be! Can you tell me where should I start in order? I have normal knowledge of basic maths, I want to be a Math Genius, I am! Where should I start? Tell me? Tell me? Thanks of the help very much, appreciating this help of you're.

. Is this possible? Or is it photoshopped?

Mathematics as we know is limited, there are mistakes. The first error of mathematics: length (area, volume) consists of the points. Look at the evidence which shows that the length includes the length, size of area,volume by volume. Then you wonder what is the point. (larger image) I am a mathematician, inventor. My basis for an axiom (definition point, along a natural). Everything else is proved in the space, get to know my math, expand their knowledge. MS.0. The basic axiom. Definition point. Natural along. Beginning (end) is longer than the natural point. Natural along with two points, the lengthbetween points. (small image) To understand my math read …

I saw meteorite men and thought about where abouts meteorites fall. Then i decided to figure out how often they fall near me. I just want to know if the math is right? Please correct what is wrong. It is all based on 2 numbers, Earths total square miles and total meteorites per year which are both rounded, so it's not perfect. If you can help i'd appreciate it. P.S. .0005 came from 58,000,000 devided by 29,000. Thanks again The attachment has the chart. Also the 61 years thing i know is wrong, forgot to delete that. meteotie chart.pdf

Hello, I've been reading a bit about Gödel's Incompleteness Theorem. On this video ( ) of a talk at Google, the speaker mentions that there are true statements that cannot be proven. My question is: how can a statement be true and not be proven, in other words, how can we be absolutely certain that it is true if we cannot prove it? Hope this is clear. Thank you, David

I have this problem with solving 4th order tensors. I've spent 5 hours trying to solve the damn question in the library but no luck. Is the problem solvable? please help I'm not smart enough for this kind of question The attached file is the problem... Please help a poor guy out:(

does anybody know about the job market of biostatistics graduates with PhD degree? thanks!

I was trying to figure out how to solve a decibel problem. I have been out of school for a very long time and my math is very rusty. Here is an example of the problem: If an amplifier turns a 5watt signal into a 25watt signal thats a gain of ? The equation is: 10xlog10(25/5)=10xlog10(5)=10x0.7=7db now my question. I can easily solve this problem using the log function of my calculator but solving it without a calculator has evaded me. I find that log10=1 but then were did the 0.7 come from. I have attempted to look up the mantissa but I either cannot find the right one in the chart or I am looking for the wrong thing. Can someone show me how to determine the ans…

Can anyone assist in this differential equation : Ldi/dt + Ri = Usin(wt). Thanks a lot in advance

1. If x^2-px-q=o, where p and q are positive integers, which of the following could not equal x^3? A. 4x+3 B. 8x+5 C. 8x+7 D. 10x+3 E. 26x+5 2. X is a positive integer in which each digit is 1; that is, X is of the form 111...111. Given that every digit of the integer pX^2+qX+r (where p, q and r are fixed integer coefficients and p > 0) is also 1, irrespective of the number of digits X, which of the following is a possible value of q? A. -2 B. -1 C. 0 D. 1 E. 2 Just give me some hints, then I can work them out. Thank you very much!

I'm trying to refresh all of the mathematics I learned. I graduated with an engineering degree. What are the best college level textbooks for calculus? Also, I'd like to get a better handle on trig, algebra, geometry, ie., all the easy stuff. I remember a lot of the easy stuff, but I'd like to learn all the proofs so I can have a full understanding of it all, so I can know it like the back of my hand. My eventual goal is to go back to school to become a professional astronomer.

Can anyone suggest a good book on Complex Analysis? I need a book that would be good for self studying.

For moving about on a sphere in a "straight" line in a given direction. final_latitude = latitude + (sin(angle) * distance) final_longitude = longitude + (cos(angle) * distance) Except it only works well in the tropics, neer the equator. The closer to the poles you go the more inaccurate it becomes tending to be attracted towards them, does anyone know how to correct it?

A few years ago, I had a math class, which I needed a TI-83 calculator, for. I don't have the class, anymore, but I bought the calculator, myself, so I still have it. However, of all the nifty features that the TI-83 has over traditional "pocket" calculators, it seems to lack a memory function! Pocket calculators allowed you to save a number to memory. You could also add and subtract from that memory. If you wanted to multiply the memory by something, there was a way to do that. This allowed you to use a commonly-recurring, but large number, without having to tediously punch in that same number over and over again. How do I do that, on a TI-83?

Now... When i first heard about this I thought it was a joke but i've seen references to it in several places now. Is it real and can anyone explain what it is intended to do? ( if it does indeed exist?) http://en.wikipedia.org/wiki/Cox-Zucker_machine http://en.wikipedia.org/wiki?title=Talk:Cox-Zucker_machine http://improbable.com/2008/08/12/the-cox-zucker-machine/

Ok so to start out, I was given a puzzle to solve under the conditions that i could not solve it by using a scientific calculator. So hitting Sin(x) is not an option. I was started out with a circle as a base. The circle has a Diameter of 6.5 meters and an idea of putting 80 points along the edge of the circle with the same distance between each of them. I need to find the distance that is between these points, Not the arch curve but the straight line between them. best way i thought of how to do that was to make a triangle, using the radius for 2 of the sides and finding the link the third and final side through law of sines and law of cosines. Side a=3.25 S…

I've heard of this mathematical theorem but could someone explain it to me, in very, very short words and simple sentences?