3D Shapes . Intro We live in a three-dimensional world. Every object you can see or touch has three dimensions that can be measured: length, width, and height. The room you are sitting in can be described by these three dimensions. The monitor you're looking at has these three dimensions. Even you can be described by these three dimensions. In the world around us, there are many three-dimensional geometric shapes. cgi-bin Matrix Solver Solving a linear equation system of up to 20 unknowns. If you need some help please scroll down to the example. If not, fill the 2 boxes below , then click on the "Go" button. Example As an example, let's say you have the following 3 equations to solve for the unknowns x , y , and z : 2x + 3y + 1/3z = 10 3x + 4y + 1z = 17 2y + 7z = 46 To enter the above system into the matrix solver you enter the number "3" into the small box for the number of unknowns/equations. Into the big box for the coefficients you enter the following numbers : 2 3 1/3 1.0e+1 3 4 1 17 0 2 7 46.0 Notice that each row represents one equation. Note, that for the coefficients you may enter either whole numbers ( like 2 ), fractions of whole numbers ( like 1/3 ), numbers with a decimal point ( like 46.0 ), or numbers in scientific notation ( 1.0e+01 which is the same as 10 ). After entering all numbers click on the "Go" button. You may check the solution : Which checks out.
Free Printable Math Worksheets at DadsWorksheets.com Algebra Menu Algebra is great fun - you get to solve puzzles! With computer games you play by running, jumping or finding secret things. Well, with Algebra you play with letters, numbers and symbols, and you also get to find secret things! The Basics Exponents Simplifying Factoring Factoring - Introduction Logarithms Polynomials Linear Equations Quadratic Equations Solving Word Questions Functions Definition of a Function Sequences and Series Where to Next? Learn trigonometry at our Trigonometry Index Learn about Vectors Learn more advanced algebra at Algebra 2 (College Algebra)
Relplot: equation plotter Relplot constructs high-resolution PostScript or PDF plots of the solutions to equations on two variables. Unlike most other plotters, it can handle general equations and inequations, not just functions, and it can plot multiple equations at once. What can you plot? Multiple equations/formulas separated by commas: ,Logical operators for combining formulas: && & ||Relational operators: = < <= > >=Binary arithmetic ops: + * - / ^ modUnary arithmetic ops: |x| sqrt floor exp ln sin cos tan asin acos atan atan2 sinh cosh tanhBuilt-in variables: x y r thConstants: pi e 2 -.5 1.4e5 .7e01 πUser-defined function applications: f(e1,..., en)User-defined variables: a-z x^3 + y^3 = 3xy, r^2 = 9/2 Some interesting equations to try: Got feedback? Relplot was written by Andrew Myers at Cornell University.
The Teacher's Corner Plan a Pi Day Party for March 14 Teachers in many classrooms celebrate Pi Day this month. Pi -- the number 3.14… gets its own special day on 3/14, or March 14. EdWorld editors have gathered a collection of links to ideas and activities that will help you plan a Pi Day celebration for your classroom or school. If one day of the year screams "Party!" March 14 also happens to be the birth date of Albert Einstein -- which makes the day an extra special one for planning math challenges and math fun! According to Dr. Because pi is 3.14159…, some schools hold their big Pi Day celebrations 3/14 at exactly 1:59 p.m. Education World editors took some time to surf the Internet in search of ideas around which teachers might build Pi Day celebrations. Lesson Plans and Other Activities for Pi Day We have gathered more than two dozen links to Pi Day activity ideas. March 14 Is Pi Day! Great Pi Day Activities for Teachers How to Celebrate Pi Day Pi Day WebQuest Pi Day Lessons from the Math Forum (Grades 5-8) Making a Pi Necklace (Grades 5-8)
Linear format equations and Math AutoCorrect in Word 2010 To insert an equation using the keyboard, press ALT+=, and then type the equation. You can insert equation symbols outside a math region by using Math AutoCorrect. For more information, see Use Math AutoCorrect rules outside of math regions check box. In this article Type equations in linear format You can type most equations quickly by using Math AutoCorrect codes. \eqarray(x+1&=2@1+2+3+y&=z@3/x&=6)<space> which resolves to this: Here are some other examples: Note When an example is followed by two consecutive spaces, the first space resolves the typed text into the equation, and the second space builds it up. Microsoft Office uses the linear format described in Unicode Technical Note 28 to build up and display mathematical expressions. Math AutoCorrect symbols Type one of the following codes followed by a delimiting term. Important The codes are case-sensitive. Note For information on inserting a symbol that is not in the chart above, see Insert a symbol or special character.
Math Worksheets | Dynamically Created Math Worksheets 3D Shapes . Intro We live in a three-dimensional world. Every object you can see or touch has three dimensions that can be measured: length, width, and height. The room you are sitting in can be described by these three dimensions. In the world around us, there are many three-dimensional geometric shapes.