Question

Find each of the following.

Answer 1

http://www.webassign.net/cgi-perl/symimage.cgi?expr=f%28x%29%20%3D%20x%5E3%20-%209

Answer 2

http://www.webassign.net/cgi-perl/symimage.cgi?expr=g%28x%29%20%3D%20root3%28x%20%2B%209%29

Answer 3

(fg)(x) =
(gf)(x) =

Answer 4

so is that suppose to be f times g
or f composed of g

Answer 5

f circle g

Answer 6

so f(g(x))

Answer 7

right?

Answer 8

\[f(x)=x^3-9\]
\[g(x)=\sqrt[3]{x+9}\]
\[f \circ g =f(g(x))=f(\sqrt[3]{x+9})=(\sqrt[3]{x+9})^3-9=(x+9)-9=x+9-9=x\]

Answer 9

\[g \circ f=g(f(x))=g(x^3-9)=\sqrt[3]{(x^3-9)+9}=\sqrt[3]{x^3}=x\]

Answer 10

since both of these =x
you can write f and g are inverses of each other

Answer 11

ok i posted 2 other ones that are similar but different, could u help with those too? i have them on my profile if you dont wanna scroll down through everything here...

Answer 12

yes?