The R Project for Statistical Computing. Mathway: Math Problem Solver. HELM - CAA resources. HELM supports two CAA regimes for both self-testing and formal assessment. an integrated web-delivered CAA regime.

An alternative CD implementation. Both regimes use . A CD implementation of the HELM self assessments is available for you to try. It is a stand-alone question bank with 20 assessments on Mathematics. Solve Your Algebra Problems Online. Free Software - GIMPS. Pages available in Chinese, Dutch, and Italian.

Warning: These translations may not be up-to-date, use the Google widget as necessary: Powered by Translate Great Internet Mersenne Prime Search GIMPS Finding World Record Primes Since 1996 You are using the download mirror (browse) Math Gems. Equations - EquationSheet.com. Whats Special About This Number? What's Special About This Number?

If you know a distinctive fact about a number not listed here, please e-mail me. primes graphs digits sums of powers bases combinatorics powers/polygonal Fibonacci geometry repdigits algebra perfect/amicable. Math. DAYTUM. The ACCOUNT link found to the right of the Daytum logo allows you to upgrade, downgrade or delete your account, as well as manage billing details and download your data.

Current Account. Displays the type of account, and the cost per month if applicable. Current Billing Information. Curta-Simulator. THE CALCULATOR REFERENCE. Online Wind Chill Calculator, Weather Calculation. Sage - Tour. Home > Polyhedral toy > Yoshimoto Cube. PDF Pad. Mathematical Atlas: A gateway to Mathematics.

THE 47 SOCIETY. Ulam spiral. Ulam spiral of size 200×200.

Black dots represent prime numbers. Diagonal, vertical, and horizontal lines with a high density of prime numbers are clearly visible. The Ulam spiral, or prime spiral (in other languages also called the Ulam Cloth) is a simple method of visualizing the prime numbers that reveals the apparent tendency of certain quadratic polynomials to generate unusually large numbers of primes. It was discovered by the mathematician Stanislaw Ulam in 1963, while he was doodling during the presentation of a "long and very boring paper" at a scientific meeting.

Lychrel number. A Lychrel number is a natural number that cannot form a palindrome through the iterative process of repeatedly reversing its digits and adding the resulting numbers.

This process is sometimes called the 196-algorithm, after the most famous number associated with the process. In base ten, no Lychrel numbers have been yet proved to exist, but many, including 196, are suspected on heuristic[1] and statistical grounds. The name "Lychrel" was coined by Wade VanLandingham as a rough anagram of Cheryl, his girlfriend's first name. Reverse-and-add process[edit] Algebraic Surfaces Gallery. Number Problem #1. How to Develop a Mindset for Math. Math uses made-up rules to create models and derive relationships.

When learning, I ask: What relationship does this model represent? What real-world items share this relationship? Impress your friends with mental Math tricks » Fun Math Blog. See Math tricks on video at the Wild About Math!

Mathcasts page. Being able to perform arithmetic quickly and mentally can greatly boost your self-esteem, especially if you don't consider yourself to be very good at Math. And, getting comfortable with arithmetic might just motivate you to dive deeper into other things mathematical. This article presents nine ideas that will hopefully get you to look at arithmetic as a game, one in which you can see patterns among numbers and pick then apply the right trick to quickly doing the calculation. Triangle Calculator. Instructions Enter values three of the six sides and angles of the triangle and the other three values will be computed.

The number of significant values entered will determine the number of significant figures in the results. Frequently Asked Questions Q: I like your triangles, especially the ones that have interior angles not summing to 180 degrees. Regular Polygon Calculator. This calculator computes various combinatorial and geometric values of a regular polygon with its diagonals drawn in.

Input the number of sides n (greater than 2) and the radius of the circumscribed circle. See below for a more detailed description of the calculator. The calculator gives the following quantities (which are discussed in the Regular Polygons Project): Diagonals — the number of proper diagonals in a regular polygon (i.e., excluding the n sides) Intersections — the number of intersections (including the n vertices) of all the diagonals of a regular polygon Regions — the number of regions into which the diagonals cut the interior of the polygon Segments — the number of segments (including the n sides of the polygon) that the diagonals cut each other into Formulas for the numbers of intersections and regions are taken from: B.

Equations - EquationSheet.com. Equation Calculator & Solver. Quick-Start Guide When you enter an equation into the calculator, the calculator will begin by expanding (simplifying) the problem. Then it will attempt to solve the equation by using one or more of the following: addition, subtraction, division, taking the square root of each side, factoring, and completing the square. Variables Any lowercase letter may be used as a variable. Exponents. The Lines Number: 40 337 956. Given a sum of single digit decimal numbers raised to single digit decimal exponents. Take all the single digit numbers and the single digit exponents, and put them together in the order they appear to form a single, multi-digit number.

There exists only one positive sum of this kind so that the answer to the sum equals the resulting multi-digit number: NumberSpiral.com - Home. Mysterious number 6174. March 2006 Anyone can uncover the mystery The number 6174 is a really mysterious number. At first glance, it might not seem so obvious. Octomatics. The really good thing about the octomatics-number-system is that you can calculate visually. just add or remove the strokes! (...of course: if 2 strokes hit they will be "destroyed" and carried one position left when adding...pretty much like normal binary math). try it...it's very easy!

For multiplication you still need to memorize the multiplication- table...but it is much smaller and easier than the decimal one: how about counting with your fingers? Just use your 8 fingers to count...you still have the two thumbs for the powers: that means you can count up to 24 that way! Dimensionless Numbers. Enigma.swf (application/x-shockwave-flash Object)

A Random Number. If you've reached this page, you have probably already given me a random number. Thanks! Now I'll explain what the point of that was. I am conducting an experiment to see what numbers I will get if I ask a bunch of people to pick a random number between 1 and 100. It was important to me that the page be very simple so as not to influence the numbers people entered. My guess is that there will be preference towards certain numbers over others.

111,111,111 x 111,111,111 - Palindromic Number.