f-x-x-3-x-2-13-g-x-5-gof-x-

Question Number 166402 by mathls last updated on 19/Feb/22

f (x) = x^{3} + x^{2} + 13

g (x) = \sqrt{5}

{g o f}_{(x)} = ?

Answered by alephzero last updated on 19/Feb/22

(g \circ f) (x) \equiv g (f (x))

If g (x) is a constant \Rightarrow

\Rightarrow (g \circ f) (x) = g (f (x)) = g (x)

(g \circ f) (x) = g (f (x)) = g (x) = \sqrt{5}