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Saturday, December 25, 2010

Symbols

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    Symbol                                           Meaning                                                   
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≠     Not equal to                       6.12 6.13                                                   
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>       Greater than                      4.78 > 4.20                                                   
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>>    Much greater than           840 >> 16                                                      
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<      Less than                            430 < 540                                                       
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<<   Much less than                  0.002 << 46                                                  
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³      Greater than or equal to     x ³ y  is satisfied for y = 3 and x > 3 or x = 3
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£      Less than or equal to          x £ y   is satisfied for y = 3 and x < 3 or x = 3

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@      Approximately equal to       3.14159 @ 3.14                                           
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S     Sum of                                      S(3 + 4 + 8) = 18                                    
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| |   Absolute magnitude of          |a| = 4, where a = -4 or +4                    
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\  Therefore                                  x = Ö\  x = ± 2                                          
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º    By definition                                                                                                 
                       Establishes a relationship between two or more quantities
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a:b                  Ratio defined by a/b                                                                   
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a:b = c:d        Proportion defined by a/b = c/d                                             
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