Question

trying to figure out fog(x) and gof(x)...

Answer 1

\[f(x) = 2x^2 +2, g(x)=5x\]

Answer 2

Suppose you have
\[f(x)=x+1\]
\[g(x)=x^2\]
\[fog(x)=f(g(x))=g(x)+1=x^2+1\]
Do you get thus?

Answer 3

*this @sgta101

Answer 4

so when i do 2(5x)^2 it's 50x^2?

Answer 5

Wrong, f(g(x) = 2(5x)^2 +2
That is is 50x^2 + 2

Answer 6

kk

Answer 7

and g(f(x) is 10x^2 +10

Answer 8

so for fog(x) i plug in g(x) and for gof(x) i plug in f(x)?

Answer 9

Yes, everytime you see an x in f, plug in g

Answer 10

thx