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Find f(x) if it is known that f(x−2)=2x−4.
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Find f(x) if it is known that f(x−2)=2x−4.

User Peter Strange
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1 Answer

5 votes
Hi,
Let assume y=x-2, so x=y+2


f(x-2)=2x-4\\ f(y)=2(y+2)-4\\ f(y)=2y+4-4\\ f(y)=2y\\
f(x)=2x


User Cfranco
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