Nounequations
From Wiktionary under the GNU Free Documentation License. An equation is a mathematical statement, in symbols, that two things are exactly the same (or equivalent). Equations are written with an equal sign, as in The equations above are examples of an equality: a proposition which states that two constants are equal. Equalities may be true or false. Equations are often used to state the equality of two expressions containing one or more variables. In the reals we can say, for example, that for any given value of x it is true that The equation above is an example of an identity, that is, an equation that is true regardless of the values of any variables that appear in it. The following equation is not an identity: It is false for an infinite number of values of x, and true for only two, the roots or solutions of the equation, x = 0 and x = 1. Therefore, if the equation is known to be true, it carries information about the value of x. To solve an equation means to find its solutions. Many authors reserve the term equation for an equality which is not an identity. The distinction between the two concepts can be subtle; for example, is an identity, while is an equation, whose roots are x = 0 and x = 1. Whether a statement is meant to be an identity or an equation, carrying information about its variables can usually be determined from its context; or by making a distinction between the equality sign ( = ) for a statement not true except perhaps in particular situations, and the equivalence symbol () for statements know to be true without further specification. Letters from the beginning of the alphabet like a, b, c... often denote constants in the context of the discussion at hand, while letters from end of the alphabet, like x, y, z..., are usually reserved for the variables, a convention initiated by Descartes. From Wikipedia under the
GNU Free Documentation License What is the easiets way to balance equations? Q. It may be simple for so many other people, but it is so hard for me. I find many other things in Chemistry like mole ratios and other stuff to be a breeze but balancing equations really mess with me. Any suggestions on how to balance equations in a simpler way? Asked by TinCan - Sun Feb 25 21:59:58 2007 - - 3 Answers - 0 Comments A. The typical way I balance equations is to first divide the equation into reactants and products. (I usually do this by drawing a vertical line to separate both sides of the equation.) Then I write out every element, usually under the specific molecule. For each element, I write how many (i.e., if my molecule has 2 nitrogen I would write N = 2). One other tip is to include total elements, if more than one molecule has the same element (on one side of the equation). For this, I just total up all of that specific element and then write it in - usually towards the bottom of the page. Once I have all of my elements listed, with their corresponding numbers, I just start from the left side of the equation and check how many of that element… [cont.] Answered by Cooper - Sun Feb 25 22:10:46 2007 How is the goal of solving equations with the variable on each side the same as solving multi-step equations? Q. How is the goal of solving equations with the variable on each side the same as solving multi-step equations? Describe the steps to solve the equation 4x + 8 = 2x 6. Asked by Daisy Anderson - Tue Jun 9 02:07:31 2009 - - 1 Answers - 0 Comments A. 4x-2x = -6-8 2x = -14 x = -7 Answered by jess4lyfe - Tue Jun 9 02:18:14 2009 How do I solve complex systems of equations with linear combinations?
Q. Apologies; Over the years I have forgotten. When I ask "complex", I mean that you can't just multiply/divide 1 side to reach an equation that is simple to add/subtract to solve. The system of equations I am currently attemping to solve is as follows: 3x - 4y = 21 4x + 2y = 6 I know how to solve this equation using substition and graphing but am unable to do it with linear combinations. Thanks! Any assistance is greatly appreciated! Asked by Neil - Thu Aug 17 15:18:57 2006 - - 10 Answers - 1 Comments A. Any linear equations that can be put into the form a0x+b0y+c0z+...p0q=k0 a1x+b1y+c1z+...p1q=k1 a2x+b2y+c2z+...p2q=k2 * * anx+bnx+cnz+...pnq=kn are called simultaneous' equations if they have (or we think that they may have) a common solution point. Equations in this form can *always* be 'reduced' to the form (called 'upper triangular') 0x+ss0y+ 0x+... 0p=ue0 0+ ss1y+ 1x+... 1p=ue0 0+ 0+ 3x+... 3p=ue0 * * 0+ 0+ 0+... np=uen by adding and/or subtracting multiples of various rows to other rows. When complete p=uen/ n and the rest of the variables may be found by continued back substitution. This is called the 'Gauss-Jordan Elimination' method. If there is a problem and the family of equations 8cannot8 be put in upper… [cont.] Answered by doug_donaghue - Thu Aug 17 16:32:42 2006 From Yahoo Answer Search: "equations"  news.google.com NBC Los Angeles That's why, when Albert Einstein introduced his general theory of relativity in 1917, he added a term to the equations to make sure they described a ... and more » news.google.com Salem-News.Com They discovered a few, apparently unconnected, mathematical equations and in the 1860s James Clerk Maxwell, a Scottish theoretical physicist, studied these ... news.google.com Motley Fool It's credited to the mathematician Carl Gustav Jacob Jacobi, who taught us to make a habit of reversing difficult equations to arrive at the solutions ... From Google News Search: "equations"  barcharts.com 219px x 169px | 75.70kB [source page] Guide Physics Equations Answers  marcias-lesson-links.com 267px x 400px | 9.70kB [source page] Here is an activity right from Kathy Richardson s books 1 2 I place a variety of counting objects in the tub enough for four students Using the designs students create equations To differentiate this activity  astrosociety.org 300px x 300px | 38.30kB [source page] austreclipse jpg 14 Sep 2007 22 54 8k austreclipse jpg LCK 27 Feb 2002 15 07 1k equations jpg 14 Sep 2007 22 54 38k equations jpg LCK 27 Feb 2002 15 07 1k From Yahoo Image Search: "equations"  book.pdfchm.com unknown ue, 15 Sep 2009 06:51:41 GM Do differential . equations. cause you distress? No worries! This friendly guide explains this intimidating subject in plain English, walking you step by step through all the key concepts from linear and separable first order ...  mapleprimes.com wmvvvvvmw ue, 08 Sep 2009 00:00:00 GM Hello! I am a beginner of maple. I try to solve a series of . equations. sets with 5 unknown parameters, T, x1,x2,y1,y2. I use fsolve to get the solutions(with 7000 series of solution T,x1,x2,y1,y2). But I found the sequence of the ...  technologyquestions.com funk Sat, 05 Sep 2009 04:20:21 GM Does this program have science . equations. or formulas you can insert? If not, how would you insert any unique symbols? From Google Blog Search: "equations" |
