Question

Find f(g(x))
Find g(f(x)) what is the difference between those?

Answer 1

it depends on what f and g are..
if f and g are inverses of each other, there is no difference.

Answer 2

Let f(x) = 3x+2 and g(x) = x2

Answer 3

f(g(x)) = f(x^2) = 3x^2 + 2
g(f(x)) = g(3x+2) =

can you simplify the second one so we can find the difference?

Answer 4

(2x+3)^2

Answer 5

how i explain the difference?

Answer 6

see your last post also

Answer 7

whata do you mean?

Answer 8

f(g(x)) = f(x^2) = 3x^2 + 2
g(f(x)) = g(3x+2) = (2x+3)^2 = 4x^2 + 12x + 9

so to find the "difference" just subtract... :)

Answer 9

can i ask one more thing?

Answer 10

Find the polynomial f(x) that has the roots of –3, 5 of multiplicity 2. Explain how you would verify the zeros of f(x). i dont know how to do this one