Question

for f(x)=2x+1 and g(x)=x3-7, find(f*g)(x).

Answer 1

thx but i also wanted to learn how to work out the problem so id be able to do it own my own

Answer 2

does that * symbol look more like a lowercase o?

Answer 3

sorta it a multiplication sign

Answer 4

like (f o g)(x)?

Answer 5

oo then no

Answer 6

like "f of g of x?" does that sound familiar?

Answer 7

not really i just staarted taking the class online so there no help for me relly

Answer 8

hmm ok i think that is what it means, it basically means to take f(x) and for the input use g(x) so it would look like this f(g(x))

Answer 9

ok

Answer 10

so do you see how g(x) = x^3 - 7, you would plug x^3 - 7 in everywhere you see an x in f(x)

Answer 11

does that make sense?

Answer 12

yea it does

Answer 13

ok cool, post your answer if you want to make sure, i will let you know if you got it

Answer 14

and i would multiply every thing were x was

Answer 15

dont multiply just plug in

Answer 16

post what you get