Question

PLEASE HELP
f(x)=17x/5lxl (absolute value of x)
f(r^4)=?

Answer 1

exactly what are we finding?

Answer 2

f(r^4)=17(r^4)/5lr^4l (absolute value of r^4, i dont know how to type that

Answer 3

Im not sure weather or not i got the right answer or not but maybe your wording is wrong cause i cant seem to find or get a answer

Answer 4

hmm if i attach a word doc would you be able to open it

Answer 5

\[
f(x) = \frac{17x}{5|x|} \\
f(r^4) = \frac{17r^4}{5|r^4|} \\
\text{r^4 is always positive or zero. It is never negative for real values of r. }\\
\text{Therefore, the absolute value can be removed. }\\
f(r^4) = \frac{17r^4}{5r^4} = \frac{17}{5}\\
\]as long as \(r \ne 0\).

Answer 6

okay i see. thank you!