prove f(x)=x 3+x-1 is a bijective function

f(x)=cubex+x-1  ,    is a bijective function,prove it
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1 Answer

"bijektiv funkshun" is sum resent fansee krat invenshun for

"won tu won"

it meen evree value av x giv exaktlee 1 value av y & other direkshun is true 2

???? is zat spozed tu be x^3+x-1 ??????
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