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If f(x + 3) = \(x^2 + 2x + 4\), find f(x).
Do I just plug in x + 3 for x?
 one year ago
 one year ago
If f(x + 3) = \(x^2 + 2x + 4\), find f(x). Do I just plug in x + 3 for x?
 one year ago
 one year ago

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waterineyesBest ResponseYou've already chosen the best response.1
Replace x + 3 by x.. So put x  3..
 one year ago

CalcmathleteBest ResponseYou've already chosen the best response.0
Wait, why would that work? I just want to understand the dynamics of why it works.
 one year ago

sai1234Best ResponseYou've already chosen the best response.0
put x  3 inplace of x because f((x3)+3)=f(x3+3)=f(x)
 one year ago

waterineyesBest ResponseYou've already chosen the best response.1
If you replace there x by x 3: Then: \[f(\color{green}{x} + 3) = f(\color{blue}{x  3} + 3) = f(x)\]
 one year ago

CalcmathleteBest ResponseYou've already chosen the best response.0
Oh I get it now... f(x) = x^2  4x + 7?
 one year ago

waterineyesBest ResponseYou've already chosen the best response.1
Hey right this time you became 93.. Congratulations..
 one year ago

CalcmathleteBest ResponseYou've already chosen the best response.0
Thank you again :)
 one year ago
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