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Studentc14
Group Title
functions:
If f(x)=x^2x+1, solve:
1) f(x+1)
2) f(a)
3) 2f(x)2
4) f(2x)
 2 years ago
 2 years ago
Studentc14 Group Title
functions: If f(x)=x^2x+1, solve: 1) f(x+1) 2) f(a) 3) 2f(x)2 4) f(2x)
 2 years ago
 2 years ago

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Studentc14 Group TitleBest ResponseYou've already chosen the best response.0
CAN I post my answers and someone check it?
 2 years ago

jaersyn Group TitleBest ResponseYou've already chosen the best response.0
you mean "evaluate"?
 2 years ago

Studentc14 Group TitleBest ResponseYou've already chosen the best response.0
probably, sorry
 2 years ago

jaersyn Group TitleBest ResponseYou've already chosen the best response.0
yeah, lol, just substitute whatever is in f(whatever is in here)
 2 years ago

kmalone99 Group TitleBest ResponseYou've already chosen the best response.1
yes i'll check it
 2 years ago

Studentc14 Group TitleBest ResponseYou've already chosen the best response.0
1) x^2+x+3 2) a^2+a+1 (i didn't know if there was any way to simplify this? 3) 2x^2x 4) 2x^22x+1
 2 years ago

kmalone99 Group TitleBest ResponseYou've already chosen the best response.1
all wrong, it three right 2 f(x)2?
 2 years ago

Studentc14 Group TitleBest ResponseYou've already chosen the best response.0
its 2*f(x) 2
 2 years ago

Studentc14 Group TitleBest ResponseYou've already chosen the best response.0
can you show me how to do them then?
 2 years ago

kmalone99 Group TitleBest ResponseYou've already chosen the best response.1
jaersyn i got this
 2 years ago

jaersyn Group TitleBest ResponseYou've already chosen the best response.0
all yours kmalone99
 2 years ago

kmalone99 Group TitleBest ResponseYou've already chosen the best response.1
\[1) f(x+1)= (x+1)^{2}(x+1)+1\] \[=(x+1)(x+1)x1+1\] \[=x ^{2}+2x+1x=x ^{2}+x+1\]
 2 years ago

Studentc14 Group TitleBest ResponseYou've already chosen the best response.0
Ok, I get #1. I just didn't distribute the negative sign.
 2 years ago

kmalone99 Group TitleBest ResponseYou've already chosen the best response.1
2) f(a)=\[f(a)=(a)^{2}(a)+1=a ^{2}+a+1\]
 2 years ago

kmalone99 Group TitleBest ResponseYou've already chosen the best response.1
now retry 3 and 4
 2 years ago

Studentc14 Group TitleBest ResponseYou've already chosen the best response.0
i got 2... i dont see what went wrong with 3 and i dont know how to simplify 4
 2 years ago

Studentc14 Group TitleBest ResponseYou've already chosen the best response.0
wait 3 should be 2x^22x?
 2 years ago

kmalone99 Group TitleBest ResponseYou've already chosen the best response.1
great now on four you just did not square the 2
 2 years ago

Studentc14 Group TitleBest ResponseYou've already chosen the best response.0
oh! so it would be 4x^22x+1 ?
 2 years ago

kmalone99 Group TitleBest ResponseYou've already chosen the best response.1
yes great job you get A+
 2 years ago

Studentc14 Group TitleBest ResponseYou've already chosen the best response.0
yay! lol I just always make silly simplifying mistakes or I miss a sign or something simple like that. Oh well, thanks very much ^_^
 2 years ago
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