Utilizando f (x) = χ² - 2 y g (x) = 5x + 3, encuentra : f (g(2)) ; g (f ( - 4) ) ; f (f (1) ) ; f (g(x) )?
Utilizando f (x) = χ² - 2 y g (x) = 5x + 3, encuentra : f (g(2)) ; g (f ( - 4) ) ; f (f (1) ) ; f (g(x) ).
En resumen
F(x) = x² - 2 g(x) = 5x + 3 1. F(g(2)) g(2) = 5(2) + 3 = 10 + 3 = 13 f(g(2) = f(13) = 13² - 2 = 169 - 2 = 167 2. G(f( - 4)) f( - 4) = ( - 4)² - 2 = 16 - 2 = 14 g(f( - 4) = g(14) = 5(14) + 3 = 70 + 3 = 73 3.
Mejor respuesta
F(x) = x² - 2
g(x) = 5x + 3
1.
F(g(2)) g(2) = 5(2) + 3 = 10 + 3 = 13 f(g(2) = f(13) = 13² - 2 = 169 - 2 = 167
2.
G(f( - 4)) f( - 4) = ( - 4)² - 2 = 16 - 2 = 14 g(f( - 4) = g(14) = 5(14) + 3 = 70 + 3 = 73
3.
F(f(1)) f(1) = 1² - 2 = 1 - 2 = - 1 f(f( - 1)) = f( - 1) = ( - 1)² - 2 = 1 - 2 = - 1
4.
F(g(x) f(5x + 3) = (5x + 3)² - 2 = 25x² + 30x + 9 - 2 = 25x² + 30x + 7.