Question

Simplify f(x) = the quantity 3 x^-2 - 4x plus 1 all over 3x -1. Using complete sentences, explain why f(1) = 0, f(0) = -1, and f(-1) = -2, yet f(1/3) is undefined. Make sure to show your work.

Answer 1

do you mean this?
\[\LARGE f(x)=\frac{3x^{-2}-4x+1}{3x-1}\]

Answer 2

yea except the exponent isnt negative

Answer 3

you wrote it negative ... check it out ! O_O !

ok.. That's nice . ;) hold on a second I'll think ;)

Answer 4

\[\LARGE f(1)=\frac{3\cdot 1^2-4\cdot 1+1}{3\cdot 1-1}\]

\[\LARGE f(1)=\frac{3-4+1}{3-1}\]

\[\LARGE f(1)=\frac{0}{2}\]

\[\LARGE f(1)=0\]


just substitute given value to the X and you'll get the results ....

just follow the steps I've shown ;) Good Luck !

Answer 5

yea i just tottally blanked out to what you just did. can u explain it cus im confused.

Answer 6

@tmest1992

if you have:

f(x)= something...(anything)

f(1)= substitute 1 instead of X...

example:

f(x)=3x+2 ,f(1)=?

f(1)=3*1-2

do you understand it ?