函數(shù)概念-展示頁(yè)
2024-11-21 06:39本頁(yè)面
【正文】 Whew! What did that say? Set A is the domain 1 2 3 4 5 Set B is the range 2 10 8 6 4 Must use all the x’s A function f fro set A to set B is a rule of cor espondence that assigns to each ele ent x in the set A ex ctlyele ent y in the set B. The x value can only be assigned to one y This is a function it meets our conditions Set A is the domain 1 2 3 4 5 Set B is the range 2 10 8 6 4 Must use all the x’s Let’s look at another relation and decide if it is a function. The x value can only be assigned to one y This is a function it meets our conditions The second condition says each x can have only one y, but it CAN be the same y as another x gets assigned to. A good example that you can “relate” to is students in Math 1010 this semester are set A. The grade the earn out of the class is set B. Each student must be assigned a grade and can only be assigned ONE grade, but more than one student can get the same grade (we hope sowe want lots of A’s). The example show on the previous screen had each student getting the same grade. That’s okay. 1 2 3 4 5 2 10 8 6 4 Is the relation shown above a function? NO Why not??? 2 was assigned both 4 and 10 A good exa ple that you can “relate” to is students in ath 1010 this se ester are set A. The grade they earn out of the class is set B. Each student ust be assigned a grade and can only be assigned ONE grade, but more than one student can get the sa e grade (we hope sowe want lots of A’s). The exa ple shown on the previous screen h
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