Question

Could anyone help me with compositions of functions

Answer 1

only if we know the question ...

Answer 2

cgi file extension?

Answer 3

i hope your providing a link that can actually be opened ....

Answer 4

do you recall what we do when we have say:

f(x) = 1 + x ; and x = 3 ?

Answer 5

correct; this is the same thing, but using a function instead of a value ....

Answer 6

\[g(x) = x + \sqrt{x} - t\]
\[g(f(x)) = f(x) + \sqrt{f(x)} - t\]

Answer 7

plug in the rule that defines f(x) and simplify as desired

Answer 8

*-2

Answer 9

that just defines the domain; it doesnt change the setup itself; only the values for x that can be used.

Answer 10

for example:\[\frac{x+1}{x+2}\]is only valid for \(x\ne-2\)

Answer 11

with any luck, maybe :)

x^2-10x+25+x-5-2

x^2-9x+18

yes

Answer 12

what u mean with any luck

Answer 13

i hadnt worked it out to verify

Answer 14

how u verify it

Answer 15

i worked it out

notice that at the top of my reply i wasnt sure; then i worked it out and got the same answer as you posted

this either means that our results are correct, or that maybe we make the same mistake ...

Answer 16

well i just used the calculator but i didnt know where to put x (greater than) sign 5 at

Answer 17

just put in x=5; you should get a value from the range