Question

I have a few problems that I need desperate help on! Can anyone help?

1) f(x)=10/7x; g(x)=7/x
What is the domain of (2)
What is the domain of (7)

2.) Ln,g(x)=e^2x and h(x)=x^5
A) Fog (x) Domain
B) Gof (x) Domain
C) Foh (x) Domain

Answer 1

f(x) , g(x) FoG = F(g(x)) Gof= g(f(x)) .. so in other word your still finding a domani the normal way except were you would normal have x or y plug the designated function into the variable spot first then solve for domain.

Answer 2

so for example y=f(x)= 2x+4 and g(x)=3x fog --> f(g(x))= 2(g(x))+4 fog=6x+4

Answer 3

can you show me how to do mine?

Answer 4

do you understand what i showed you?

Answer 5

I am so frustrated with this I have no clue. I have a huge test is due tomorrow.. beyond frustrated

Answer 6

you know what domain and range are?

Answer 7

yes

Answer 8

ok great

Answer 9

f(x)=10/7x g(x)=7/x so FoG is f(g(x)) do you understand that?

Answer 10

yes

Answer 11

gof be... g(f(x))

Answer 12

right so what is Fog how would you do it?

Answer 13

f(h(x))

Answer 14

ok well fog= \[10/7(g(x))\]

Answer 15

g(x)=7/x

Answer 16

=10x/49

Answer 17

when they domain of (20 what are they referring too

Answer 18

*(2)

Answer 19

Idk