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Examples of Mathematics


Logarithms Posted on 2011-05-03 12:29:58
A logarithm answers a simple question: How many of one number do we multiply to get another number? For example: How many 2s need to be m...
Multiply two polynomials Posted on 2011-05-03 12:24:54
To multiply two polynomials: * multiply each term in one polynomial by each term in the other polynomial * add those answers togeth...
Cube roots Posted on 2011-05-03 12:21:23
To cube a number, just use it in a multiplication 3 times. A cube root goes the other direction: 3 cubed is 27, so the cube root of 27 is 3 ...
Perfect Cubes Posted on 2011-05-03 12:19:32
The Perfect Cubes are the cubes of the whole numbers: 1 = 1 2 = 8 3 = 27 4 = 64 5 = 125 6 = 216 7 = 343 8 = 512 9 = 729 10 = 1000 11 = 1331...
Reciprocal of a number Posted on 2011-05-03 12:16:42
Turn it upside down. To get the reciprocal of a number, just divide 1 by the number. Examples: Number -> Reciprocal = As a Decimal 2 -...
Reciprocal of a Variable Posted on 2011-05-03 12:15:10
Turn it upside down. If you are given a variable "x", its reciprocal is "1/x". Likewise, if you are given something more complicated like "...
Substitution in Algebra Posted on 2011-05-03 12:07:53
In Algebra "Substitution" means putting numbers where the letters are: If you have: x-2 and you know that x=6 ... then you can "substitute"...
Perpendicular lines Posted on 2011-05-03 12:04:31
A line is perpendicular to another if they meet at 90 degrees. The red line is perpendicular to the blue line: Perpendicular have slope...
Parallel lines Posted on 2011-05-03 12:01:02
Lines are parallel if they are always the same distance apart (called "equidistant"), and will never meet. An example of two parallel lin...
Irrational numbers Posted on 2011-04-25 11:52:11
An Irrational Number is a real number that cannot be written as a simple fraction. An example of irrational number is Pi (π): &am...
Rational numbers Posted on 2011-04-25 11:48:48
A rational number is a number that can be written as a simple fraction, in which both the numerator (the number on top) and the denominator ...
Even and odd numbers Posted on 2011-04-25 11:46:44
Even numbers are numbers that can be divided evenly by 2. Examples of Even numbers: { … -4, -2, 0, 2, 4, … } Odd numbers are numbers th...
Prime Numbers Posted on 2011-04-25 11:44:18
A prime number can be divided, without a remainder, only by itself and by 1. Some examples of prime numbers are: 2 3 5 7 11 13 17 ...
Roman Numerals Posted on 2011-04-25 11:41:12
Roman numerals are expressed by letters of the alphabet: I=1 V=5 X=10 L=50 C=100 D=500 M=1000 Examples of roman numerals: VI = 6 (5 +...
Distributive Law Posted on 2011-03-27 21:30:43
Distributive Law says that: a(b + c) = ab + ac Examples of the Distributive Law: a. 9(a + 7) = 9a + 63 b. -6(y - 8) = -6y + 48 c. -a...
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