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  • Given the domain,D={-1,0,1},which equation represents a function?

    Given the domain,D={-1,0,1},which equation represents a function?
    A:y²=x² B:x²+y²=25 C:y=1/x D:y=﹣x²
    1.This problem need you to test out several points such as D for { -1,0,1}.
    2.Example,when you plot coordinate points of ( X,Y) such that (1,-1),(2,0),( 3,1) which
    answer choice in A,B,C or D would create something that look for like a line graph?
    3.When you are able to figure this out,then you found the answer.
    英語人氣:991 ℃時(shí)間:2020-05-30 02:16:45
    優(yōu)質(zhì)解答
    A,C,D
    A存在定義區(qū)間內(nèi)的點(diǎn)(x=0,y=0),(1,1)(1,-1)(-1,-1)(-1,1)
    C存在(1,1)(-1,-1)
    D存在(1,-1)(0,0)忘記說了~這是選擇題~A,C,D都是正確的那最好選哪個(gè)?。。。A,唯一的不同就是A的函數(shù)在整個(gè)區(qū)間內(nèi)有意義,CD都是部分有意義
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