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− | = | + | = MA 265 Chapter 3 Sections 3.1-3.2 = |
+ | = By: Daniel Ford = | ||
+ | = What are determinants? = | ||
− | + | To understand determinants, you must first know about permutations. | |
+ | If D = {1, 2,....,n} a set of integers from 1 to n in ascending order, then a permutation is the rearrangement of an integer in D. | ||
+ | '''<u>Example:</u>''' | ||
+ | If D = {6, 7, 8, 9}, then 7689 would be a permutation of D. This corresponds to the function f: D→ D defined by | ||
− | [[ 2011 Spring MA 26500 Momin|Back to 2011 Spring MA 26500 Momin]] | + | {{f(1) = 6 |
+ | f(2) = 7 | ||
+ | f(3) = 8 | ||
+ | f(4) = 9}} | ||
+ | |||
+ | |||
+ | |||
+ | <br> | ||
+ | |||
+ | <br> [[2011 Spring MA 26500 Momin|Back to 2011 Spring MA 26500 Momin]] | ||
+ | |||
+ | [[Category:2011_Spring_MA_26500_Momin]] |
Revision as of 09:04, 25 April 2011
MA 265 Chapter 3 Sections 3.1-3.2
By: Daniel Ford
What are determinants?
To understand determinants, you must first know about permutations.
If D = {1, 2,....,n} a set of integers from 1 to n in ascending order, then a permutation is the rearrangement of an integer in D.
Example:
If D = {6, 7, 8, 9}, then 7689 would be a permutation of D. This corresponds to the function f: D→ D defined by
{{f(1) = 6 f(2) = 7 f(3) = 8 f(4) = 9}}