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Question Number 193247 by mokys last updated on 08/Jun/23
iff(x)=ax+1x+bfindf100(x)andf101(x)?
Answered by aba last updated on 08/Jun/23
f(x)=ax+1x+b=a+1−abx+bf2(x)=fof(x)=f(a+1−abx+b)=a+1−abf(x)+bf3(x)=f2of(x)=f2(a+1−abx+b)=a+1−abf(a+1−abx+b)+b=a+1−aba+1−abf(x)+b+b=a+1−abf2(x)+bfk(x)=a+1−abfk−1(x)+b,∀k⩾2⇓f100(x)=a+1−abf99(x)+bf101(x)=a+1−abf100(x)+b
Answered by aba last updated on 09/Jun/23
fk(x)=a+1−abfk−1(x)+b,∀k⩾2itistruefork=2.thenassumetrueforkandprovethatitistruefork+1fk+1(x)=fkof(x)=fk(f(x))=a+1−abfk−1(f(x))+b=a+1−abfk(x)+b∀k⩾2,fk(x)=a+1−abfk−1(x)+b
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