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840 posts tagged with math.

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840 posts tagged with math.

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## math-challenged needs formula to constrain images for php + gd image manipulation

I need a formula or actual php code to generate a new height and width that will constrain the image between a maximum height and a maximum width while retaining the correct proportions of the original image. [more inside]

## Bubbles

Maximal volume of an ellipsoid... [more inside]

## Formulas for Food

Looking for math formulas involving food. [more inside]

## 6.08 seconds = $165.50

Does anyone have any data for human error while operating a timing device? Litigeous details and much [more inside]

## Lotto Odds!!

Statistics/Lottery question; Please settle this argument between a friend and I about the Florida state lotto. [more inside]

## Books on survey design and analysis?

I'm looking for books on survey design and statistical analysis. [more inside]

## math-and-logic-filter: only two more floors - I'm almost there! or am I?

math-and-logic-filter: only two more floors - I'm almost there! or am I? [more inside]

## Memorizing Math Formulas

Any tips or tricks to memorizing financial math formulas [more inside]

## Seeking reading material before jumping into a master's in applied math...

Starting this fall, I plan on taking some preparatory undergrad coursework with the intention of eventually applying to a master's program in applied mathematics. I am seeking suggestions for reading material concerning the field of mathematics in general, both as a refresher and as insight into current focus areas and work being done. As a working engineer, my situation and background might be a bit different from most considering this route... [more inside]

## ¿¿why so trippy??

## Help me make the graph my boss imagined!

Graphing question: My boss has an idea of how our data should be presented. Please help me figure out how to make it happen! [more inside]

## Math Problem

Arby's is better at math than me... [more inside]

## math

Ask Mathfilter: I want some good math sites to read. A math-cetric Metafilter or Cosma's notebooks. [more inside]

## Join some of the dots, throw the rest away

Map geeks: can I generate a polygon shapefile from the outline of a large collection of points? There's more detail, of course. [more inside]

## Statistics: tell me about r-square for nonlinear models

StatisticsFilter: Can someone explain - with examples - why R^2 (r-square) values are not appropriate for use with non-linear regression models. [more inside]

## Dyscalculia Schools

## How to write a mathematics paper

I need to write a document with a lot of algebraic formulas. What word processor / page layout program would make this quickest and

**easiest**? [more inside]## Mystery Equation

Mystery Equation:

**x**A friend of mine has a bet regarding whether anyone can figure out what it represents. It's supposed to be mildly romantic. Ideas?^{2}+y^{2}=(1-z)z^{4}## Sock quality modelling and optimisation?

Let's say I buy

*s*socks. Now, these socks feel the very best (have a quality factor of 100) after*f*wearings, and must be discarded (have a quality factor of zero) after*f*× 100 wearings. I want to add these socks to a pool from which I draw two daily, and want to maximise the probability of selecting socks with the highest quality over the life of the pool... [more inside]## Donald in Mathmagic Land

I want to find an online version of "Donald in Mathmagic Land." [more inside]

## Two spheres colliding

Help me with the math of two spheres colliding [more inside]

## Why do I hate 8?

Why is it hard for me to perform simple mental calculations with certain numbers? [more inside]

## To doublemajor or not to doublemajor?

I'm a math major, but dont know exactly what I want to do. Should I also major in Physics? Economics? [more inside]

## Equation solving help for the intellectually challenged

(x + y)-(x*y)=79. What are x and y? [more inside]

## Help me get up to speed with Matlab.

What are the best online and offline learning materials for Matlab? [more inside]

## How to administer a read-aloud math test

Suggestions/resources for administering a math test out loud? [more inside]

## Equal and Opposite Reaction?

Physics: Difference between two people pulling on each end of a rope, and one person pulling on a rope tied to a tree. [more inside]

## Math help for the right brained

I have a math question involving combinations and sets. [more inside]

## To leading order?

In the context of information theory, what does "to leading order" mean? [more inside]

## Algorithm to display a schedule calendar with specific constraints

I've charged with adding a feature to a shift scheduler / coverage requestor that displays shift information for a given week. I've been able to display them so as to satisfy the constraints I've been given, but it's got me wondering wondering if there's a more rigorous/mathematical approach to the general problem of organizing the display of any such calendar information. [more inside]

## Puppets no can read good?

I need help writing a puppet show to teach the importance of literacy to kids k-5. [more inside]

## i need a good stat textbook for self study.

i've been looking at reviews on amazon for introductory stat textbooks, and i can't seem to find a single one that doesn't have blatantly contradictory reviews. [more inside]

## Tower....to the moon!

Math Question Kinda: I realize it's not possible. But if it was....how tall would the structure need to be if it were to be seen from both US coasts. Or is it impossible because of the curvature of the earth or whatever else I'm not thinking about it. [more inside]

## Calculate length of a pipe from the volume it holds

How long would a 3/4 inch inner diameter pipe need to be to hold exactly 27 gallons of water? [more inside]

## How to know if two proportions are statistically significant?

How do I determine whether the difference between two or more proportions is significant? [more inside]

## E-learning for math

What e-learning systems provide students with the math-related symbols they need and lets them "show their work," while still letting them submit all answers online? [more inside]

## I need suggestions for Math Movies

(Stereotype-flouting) Math Movie Suggestions Needed for a pi-day celebration. I'm looking for movies that don't portray mathematicians as schizophrenic or otherwise deranged. [more inside]

## What are the best rules, formulas and tricks in math?

MeFites: Share with me your favorite math tricks, truisms and formulas that clarified and simplified math problems and made life easier in high school and college. [more inside]

## Self-teaching algebra

I'm looking for textbook suggestions for teaching myself algebra and trigonometry. Are there any algebra textbooks that stand out as exceptionally good? [more inside]

## Balls in boxes algorithm

Is there a standard ball picking algorithm? I have 10 balls that I want put in four boxes (A-D). Every box can hold zero to all balls. [more inside]

## Working with numbers and people

What makes sense as a summer job for a math and sociology major who does a little bit of everything? [more inside]

## How does Tupper turn a number into a map?

What's the binary encoding scheme (bitmap -> n) used in Tupper's Self-Referential Formula? [more inside]

## Looking for a special case of latin squares

Mathfilter: Is there a name for the special case of the latin square in which each possible pair of adjacent elements appears exactly once in all the rows? [more inside]

## Art per square inch

How to scale prices for my paintings [more inside]

## Where to learn more about sound synthesis

Where do I start learning more about sound synthesis? [more inside]

## Math for the impatient?

Relearning math... [more inside]

## Quick! 9x7=?

100 multiplication problems in 5 minutes. Our 9yo needs help in speeding up his answers. [more inside]

## How do I solve this simple math problem?

This is probably a simple math question for someone who knows math.
Schools create an index number by using this equation:
(X * testscorenumber) + (Y * GPA) + constant = indexnumber
Some schools index numbers max out at 5, some at 200. Nonetheless, the difference between schools is in how they weight GPA vs. testscore.
What formula would allow me to compare the importance of once factor over another among schools. I.e., School A weighs testscores 2x more than school B? Is it a simple ration between X and Y?

## How can I work out if a point x,y,z is contained by a cone ?

How can I work out if a point x,y,z is contained by a cone ? [more inside]

## Help me find an entry-level Math/CS job.

I will be graduating with a B.A. in Math/C.S. in two years. What sort of job should I be looking for now? [more inside]