Question

find (fog)(2) and (f+g)(2) when f(x)=1/x and g(x)=4x+9

Answer 1

fog(2) = f(g(2))

f(x) = 1/x
g(x) = 4x + 9

So f(g(2)) = 1/4x2 + 9

1/17

Am I right?

Answer 2

That's what I got for fog yes but what's (f+g)(2) then

Answer 3

@kennybm

Answer 4

eeermmm wait wait I'm not really sure but lets try

f(2) and g(2) for it?

Answer 5

so its 17.5?

Answer 6

waiiit @ganeshie8 how do we do (f+g)(2)

Answer 7

(f+g)(2) = f(2) + g(2)

Answer 8

(f+g)(x) = f(x) + g(x)

we just add both the functions

Answer 9

so then it is 17.5 @ganeshie8 ?

Answer 10

1/2 + 17

Answer 11

yeaaah I guess that's right.