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【正文】 So let’s take the function above and make parenthesis everywhere the x was and in its place, put in a 2k. ? ? ? ? ? ? 623222 2 ??? kkkf? ? ? ? ? ? 668623422 22 ?????? kkkkkfDon’t fet order of operationspowers, then multiplication, finally addition amp。 subtraction Rememberthis tells you what is on the right hand sideit is not something you work. It says that the right hand side is the function f and it has x in it. ? ? 632 2 ??? xxxfFind f (2). This means to find the function f and instead of having an x in it, put a 2 in it. So let’s take the function above and make parenthesis everywhere the x was and in its place, put in a 2. ? ? ? ? ? ? 623222 2 ??????f? ? ? ? ? ? 20668623422 ?????????fDon’t fet order of operationspowers, then multiplication, finally addition amp。Relations And Functions 169。 2020 by Shawna Haider A relation is a set of ordered pairs. {(2,3), (1,5), (4,2), (9,9), (0,6)} This is a relation The domain is the set of all x values in the relation {(The range is the set of all y values in the relation 1, )}domain = {1,0,2,4,9} These are the x values written in a set from smallest to largest range = {6,2,3,5,9} These are the y values written in a set from smallest to largest Domain (set of all x’s) Range (set of all y’s) 1 2 3 4 5 2 10 8 6 4 A relation assigns the x’s with y’s This relation can be written {(1,6), (2,2), (3,4), (4,8), (5,10)} A function f from set A to set B is a rule of correspondence that assigns to each element x in the set A exactly one element y in the set B.
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