27-09-2007, 06:11 PM
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 | Addicted to Computer | | Join Date: Sep 2007 Location: ------------ Age: 34
Posts: 1,309
Contact Number: --------------- Program / Discipline: BSIT Class Roll Number: 07-01 | |
 Function
Math for IT
 Function: It is a relationship between two sets, one is called Independent While other is called Dependent set. ?: A?B e.g.: y = ? (x) = x2 If we put the Value of x then When x = 1 y = ? (1) = 12 = 1 When x = 2 y = ? (2) = 22 = 4 When x = 3 y = ? (3) = 32 = 9 When x = 4 y = ? (4) = 42 = 16 When x = a y = ? (a) = a2 f : X → Y X = {1, 2, 3, 4, a} Y = {1, 4, 9, 16, a2} Domain: The independent set of function is called Domain X is the Domain of f because x is independent Range: The dependent set of function is called Range Y is the Range of f because y is dependent Some Points to Remember: - One Element of Domain should not have Two Images
- Every element of Domain should have an Image
- Two elements may have a Single Image.
Difference Between Range & Co domain: |